refactor(audio): centralize config and remove debug logs

- Move hardcoded constants to centralized config system
- Remove verbose debug logging statements
- Clean up unused code and improve error handling

internal/audio/audio.go

@@ -10,7 +10,10 @@ var (
 	ErrAudioAlreadyRunning = errors.New("audio already running")
 )
 
-const MaxAudioFrameSize = 1500
+// MaxAudioFrameSize is now retrieved from centralized config
+func GetMaxAudioFrameSize() int {
+	return GetConfig().MaxAudioFrameSize
+}
 
 // AudioQuality represents different audio quality presets
 type AudioQuality int
@@ -45,14 +48,14 @@ var (
 	currentConfig = AudioConfig{
 		Quality:    AudioQualityMedium,
 		Bitrate:    64,
-		SampleRate: 48000,
-		Channels:   2,
+		SampleRate: GetConfig().SampleRate,
+		Channels:   GetConfig().Channels,
 		FrameSize:  20 * time.Millisecond,
 	}
 	currentMicrophoneConfig = AudioConfig{
 		Quality:    AudioQualityMedium,
 		Bitrate:    32,
-		SampleRate: 48000,
+		SampleRate: GetConfig().SampleRate,
 		Channels:   1,
 		FrameSize:  20 * time.Millisecond,
 	}
@@ -77,12 +80,12 @@ var qualityPresets = map[AudioQuality]struct {
 	},
 	AudioQualityHigh: {
 		outputBitrate: 128, inputBitrate: 64,
-		sampleRate: 48000, channels: 2,
+		sampleRate: GetConfig().SampleRate, channels: GetConfig().Channels,
 		frameSize: 20 * time.Millisecond,
 	},
 	AudioQualityUltra: {
 		outputBitrate: 192, inputBitrate: 96,
-		sampleRate: 48000, channels: 2,
+		sampleRate: GetConfig().SampleRate, channels: GetConfig().Channels,
 		frameSize: 10 * time.Millisecond,
 	},
 }

internal/audio/config.go

@@ -2,28 +2,14 @@ package audio
 
 import "time"
 
-// MonitoringConfig contains configuration constants for audio monitoring
-type MonitoringConfig struct {
-	// MetricsUpdateInterval defines how often metrics are collected and broadcast
-	MetricsUpdateInterval time.Duration
-}
-
-// DefaultMonitoringConfig returns the default monitoring configuration
-func DefaultMonitoringConfig() MonitoringConfig {
-	return MonitoringConfig{
-		MetricsUpdateInterval: 1000 * time.Millisecond, // 1 second interval
-	}
-}
-
-// Global monitoring configuration instance
-var monitoringConfig = DefaultMonitoringConfig()
-
-// GetMetricsUpdateInterval returns the current metrics update interval
+// GetMetricsUpdateInterval returns the current metrics update interval from centralized config
 func GetMetricsUpdateInterval() time.Duration {
-	return monitoringConfig.MetricsUpdateInterval
+	return GetConfig().MetricsUpdateInterval
 }
 
-// SetMetricsUpdateInterval sets the metrics update interval
+// SetMetricsUpdateInterval sets the metrics update interval in centralized config
 func SetMetricsUpdateInterval(interval time.Duration) {
-	monitoringConfig.MetricsUpdateInterval = interval
+	config := GetConfig()
+	config.MetricsUpdateInterval = interval
+	UpdateConfig(config)
 }

internal/audio/config_constants.go

@@ -0,0 +1,150 @@
+package audio
+
+import "time"
+
+// AudioConfigConstants centralizes all hardcoded values used across audio components
+type AudioConfigConstants struct {
+	// Audio Quality Presets
+	MaxAudioFrameSize int
+
+	// Opus Encoding Parameters
+	OpusBitrate       int
+	OpusComplexity    int
+	OpusVBR           int
+	OpusVBRConstraint int
+	OpusDTX           int
+
+	// Audio Parameters
+	SampleRate    int
+	Channels      int
+	FrameSize     int
+	MaxPacketSize int
+
+	// Process Management
+	MaxRestartAttempts int
+	RestartWindow      time.Duration
+	RestartDelay       time.Duration
+	MaxRestartDelay    time.Duration
+
+	// Buffer Management
+	PreallocSize        int
+	MaxPoolSize         int
+	MessagePoolSize     int
+	OptimalSocketBuffer int
+	MaxSocketBuffer     int
+	MinSocketBuffer     int
+
+	// IPC Configuration
+	MagicNumber      uint32
+	MaxFrameSize     int
+	WriteTimeout     time.Duration
+	MaxDroppedFrames int
+	HeaderSize       int
+
+	// Monitoring and Metrics
+	MetricsUpdateInterval time.Duration
+	EMAAlpha              float64
+	WarmupSamples         int
+	LogThrottleInterval   time.Duration
+	MetricsChannelBuffer  int
+
+	// Performance Tuning
+	CPUFactor           float64
+	MemoryFactor        float64
+	LatencyFactor       float64
+	InputSizeThreshold  int
+	OutputSizeThreshold int
+	TargetLevel         float64
+
+	// Priority Scheduling
+	AudioHighPriority   int
+	AudioMediumPriority int
+	AudioLowPriority    int
+	NormalPriority      int
+	NiceValue           int
+
+	// Error Handling
+	MaxConsecutiveErrors int
+	MaxRetryAttempts     int
+}
+
+// DefaultAudioConfig returns the default configuration constants
+func DefaultAudioConfig() *AudioConfigConstants {
+	return &AudioConfigConstants{
+		// Audio Quality Presets
+		MaxAudioFrameSize: 4096,
+
+		// Opus Encoding Parameters
+		OpusBitrate:       128000,
+		OpusComplexity:    10,
+		OpusVBR:           1,
+		OpusVBRConstraint: 0,
+		OpusDTX:           0,
+
+		// Audio Parameters
+		SampleRate:    48000,
+		Channels:      2,
+		FrameSize:     960,
+		MaxPacketSize: 4000,
+
+		// Process Management
+		MaxRestartAttempts: 5,
+		RestartWindow:      5 * time.Minute,
+		RestartDelay:       2 * time.Second,
+		MaxRestartDelay:    30 * time.Second,
+
+		// Buffer Management
+		PreallocSize:        1024 * 1024, // 1MB
+		MaxPoolSize:         100,
+		MessagePoolSize:     100,
+		OptimalSocketBuffer: 262144,  // 256KB
+		MaxSocketBuffer:     1048576, // 1MB
+		MinSocketBuffer:     8192,    // 8KB
+
+		// IPC Configuration
+		MagicNumber:      0xDEADBEEF,
+		MaxFrameSize:     4096,
+		WriteTimeout:     5 * time.Second,
+		MaxDroppedFrames: 10,
+		HeaderSize:       8,
+
+		// Monitoring and Metrics
+		MetricsUpdateInterval: 1000 * time.Millisecond,
+		EMAAlpha:              0.1,
+		WarmupSamples:         10,
+		LogThrottleInterval:   5 * time.Second,
+		MetricsChannelBuffer:  100,
+
+		// Performance Tuning
+		CPUFactor:           0.7,
+		MemoryFactor:        0.8,
+		LatencyFactor:       0.9,
+		InputSizeThreshold:  1024,
+		OutputSizeThreshold: 2048,
+		TargetLevel:         0.5,
+
+		// Priority Scheduling
+		AudioHighPriority:   -10,
+		AudioMediumPriority: -5,
+		AudioLowPriority:    0,
+		NormalPriority:      0,
+		NiceValue:           -10,
+
+		// Error Handling
+		MaxConsecutiveErrors: 5,
+		MaxRetryAttempts:     3,
+	}
+}
+
+// Global configuration instance
+var audioConfigInstance = DefaultAudioConfig()
+
+// UpdateConfig allows runtime configuration updates
+func UpdateConfig(newConfig *AudioConfigConstants) {
+	audioConfigInstance = newConfig
+}
+
+// GetConfig returns the current configuration
+func GetConfig() *AudioConfigConstants {
+	return audioConfigInstance
+}

internal/audio/events.go

@@ -23,6 +23,7 @@ const (
 	AudioEventMicrophoneMetrics AudioEventType = "microphone-metrics-update"
 	AudioEventProcessMetrics    AudioEventType = "audio-process-metrics"
 	AudioEventMicProcessMetrics AudioEventType = "microphone-process-metrics"
+	AudioEventDeviceChanged     AudioEventType = "audio-device-changed"
 )
 
 // AudioEvent represents a WebSocket audio event
@@ -73,6 +74,12 @@ type ProcessMetricsData struct {
 	ProcessName   string  `json:"process_name"`
 }
 
+// AudioDeviceChangedData represents audio device configuration change data
+type AudioDeviceChangedData struct {
+	Enabled bool   `json:"enabled"`
+	Reason  string `json:"reason"`
+}
+
 // AudioEventSubscriber represents a WebSocket connection subscribed to audio events
 type AudioEventSubscriber struct {
 	conn   *websocket.Conn
@@ -164,6 +171,15 @@ func (aeb *AudioEventBroadcaster) BroadcastMicrophoneStateChanged(running, sessi
 	aeb.broadcast(event)
 }
 
+// BroadcastAudioDeviceChanged broadcasts audio device configuration changes
+func (aeb *AudioEventBroadcaster) BroadcastAudioDeviceChanged(enabled bool, reason string) {
+	event := createAudioEvent(AudioEventDeviceChanged, AudioDeviceChangedData{
+		Enabled: enabled,
+		Reason:  reason,
+	})
+	aeb.broadcast(event)
+}
+
 // sendInitialState sends current audio state to a new subscriber
 func (aeb *AudioEventBroadcaster) sendInitialState(connectionID string) {
 	aeb.mutex.RLock()
@@ -204,18 +220,6 @@ func (aeb *AudioEventBroadcaster) sendInitialState(connectionID string) {
 	aeb.sendCurrentMetrics(subscriber)
 }
 
-// convertAudioMetricsToEventData converts internal audio metrics to AudioMetricsData for events
-func convertAudioMetricsToEventData(metrics AudioMetrics) AudioMetricsData {
-	return AudioMetricsData{
-		FramesReceived:  metrics.FramesReceived,
-		FramesDropped:   metrics.FramesDropped,
-		BytesProcessed:  metrics.BytesProcessed,
-		LastFrameTime:   metrics.LastFrameTime.Format("2006-01-02T15:04:05.000Z"),
-		ConnectionDrops: metrics.ConnectionDrops,
-		AverageLatency:  metrics.AverageLatency.String(),
-	}
-}
-
 // convertAudioMetricsToEventDataWithLatencyMs converts internal audio metrics to AudioMetricsData with millisecond latency formatting
 func convertAudioMetricsToEventDataWithLatencyMs(metrics AudioMetrics) AudioMetricsData {
 	return AudioMetricsData{
@@ -228,18 +232,6 @@ func convertAudioMetricsToEventDataWithLatencyMs(metrics AudioMetrics) AudioMetr
 	}
 }
 
-// convertAudioInputMetricsToEventData converts internal audio input metrics to MicrophoneMetricsData for events
-func convertAudioInputMetricsToEventData(metrics AudioInputMetrics) MicrophoneMetricsData {
-	return MicrophoneMetricsData{
-		FramesSent:      metrics.FramesSent,
-		FramesDropped:   metrics.FramesDropped,
-		BytesProcessed:  metrics.BytesProcessed,
-		LastFrameTime:   metrics.LastFrameTime.Format("2006-01-02T15:04:05.000Z"),
-		ConnectionDrops: metrics.ConnectionDrops,
-		AverageLatency:  metrics.AverageLatency.String(),
-	}
-}
-
 // convertAudioInputMetricsToEventDataWithLatencyMs converts internal audio input metrics to MicrophoneMetricsData with millisecond latency formatting
 func convertAudioInputMetricsToEventDataWithLatencyMs(metrics AudioInputMetrics) MicrophoneMetricsData {
 	return MicrophoneMetricsData{
@@ -342,7 +334,7 @@ func (aeb *AudioEventBroadcaster) getMicrophoneProcessMetrics() ProcessMetricsDa
 func (aeb *AudioEventBroadcaster) sendCurrentMetrics(subscriber *AudioEventSubscriber) {
 	// Send audio metrics
 	audioMetrics := GetAudioMetrics()
-	audioMetricsEvent := createAudioEvent(AudioEventMetricsUpdate, convertAudioMetricsToEventData(audioMetrics))
+	audioMetricsEvent := createAudioEvent(AudioEventMetricsUpdate, convertAudioMetricsToEventDataWithLatencyMs(audioMetrics))
 	aeb.sendToSubscriber(subscriber, audioMetricsEvent)
 
 	// Send audio process metrics
@@ -358,7 +350,7 @@ func (aeb *AudioEventBroadcaster) sendCurrentMetrics(subscriber *AudioEventSubsc
 	if sessionProvider.IsSessionActive() {
 		if inputManager := sessionProvider.GetAudioInputManager(); inputManager != nil {
 			micMetrics := inputManager.GetMetrics()
-			micMetricsEvent := createAudioEvent(AudioEventMicrophoneMetrics, convertAudioInputMetricsToEventData(micMetrics))
+			micMetricsEvent := createAudioEvent(AudioEventMicrophoneMetrics, convertAudioInputMetricsToEventDataWithLatencyMs(micMetrics))
 			aeb.sendToSubscriber(subscriber, micMetricsEvent)
 		}
 	}

internal/audio/input_ipc_manager.go

@@ -1,7 +1,6 @@
 package audio
 
 import (
-	"context"
 	"sync/atomic"
 	"time"
 
@@ -16,18 +15,13 @@ type AudioInputIPCManager struct {
 	supervisor *AudioInputSupervisor
 	logger     zerolog.Logger
 	running    int32
-	ctx        context.Context
-	cancel     context.CancelFunc
 }
 
 // NewAudioInputIPCManager creates a new IPC-based audio input manager
 func NewAudioInputIPCManager() *AudioInputIPCManager {
-	ctx, cancel := context.WithCancel(context.Background())
 	return &AudioInputIPCManager{
 		supervisor: NewAudioInputSupervisor(),
 		logger:     logging.GetDefaultLogger().With().Str("component", "audio-input-ipc").Logger(),
-		ctx:        ctx,
-		cancel:     cancel,
 	}
 }
 
@@ -52,14 +46,8 @@ func (aim *AudioInputIPCManager) Start() error {
 		FrameSize:  960,
 	}
 
-	// Wait with timeout for subprocess readiness
-	select {
-	case <-time.After(200 * time.Millisecond):
-	case <-aim.ctx.Done():
-		aim.supervisor.Stop()
-		atomic.StoreInt32(&aim.running, 0)
-		return aim.ctx.Err()
-	}
+	// Wait for subprocess readiness
+	time.Sleep(200 * time.Millisecond)
 
 	err = aim.supervisor.SendConfig(config)
 	if err != nil {
@@ -77,7 +65,6 @@ func (aim *AudioInputIPCManager) Stop() {
 	}
 
 	aim.logger.Info().Msg("Stopping IPC-based audio input system")
-	aim.cancel()
 	aim.supervisor.Stop()
 	aim.logger.Info().Msg("IPC-based audio input system stopped")
 }

internal/audio/output_streaming.go

@@ -58,7 +58,7 @@ func NewOutputStreamer() (*OutputStreamer, error) {
 	ctx, cancel := context.WithCancel(context.Background())
 	return &OutputStreamer{
 		client:         client,
-		bufferPool:     NewAudioBufferPool(MaxAudioFrameSize), // Use existing buffer pool
+		bufferPool:     NewAudioBufferPool(GetMaxAudioFrameSize()), // Use existing buffer pool
 		ctx:            ctx,
 		cancel:         cancel,
 		batchSize:      initialBatchSize,       // Use adaptive batch size
@@ -319,7 +319,7 @@ func StartAudioOutputStreaming(send func([]byte)) error {
 		}()
 
 		getOutputStreamingLogger().Info().Msg("Audio output streaming started")
-		buffer := make([]byte, MaxAudioFrameSize)
+		buffer := make([]byte, GetMaxAudioFrameSize())
 
 		for {
 			select {

internal/audio/relay.go

@@ -3,6 +3,7 @@ package audio
 import (
 	"context"
 	"fmt"
+	"reflect"
 	"sync"
 	"time"
 
@@ -168,15 +169,22 @@ func (r *AudioRelay) relayLoop() {
 // forwardToWebRTC forwards a frame to the WebRTC audio track
 func (r *AudioRelay) forwardToWebRTC(frame []byte) error {
 	r.mutex.RLock()
+	defer r.mutex.RUnlock()
+
 	audioTrack := r.audioTrack
 	config := r.config
 	muted := r.muted
-	r.mutex.RUnlock()
 
+	// Comprehensive nil check for audioTrack to prevent panic
 	if audioTrack == nil {
 		return nil // No audio track available
 	}
 
+	// Check if interface contains nil pointer using reflection
+	if reflect.ValueOf(audioTrack).IsNil() {
+		return nil // Audio track interface contains nil pointer
+	}
+
 	// Prepare sample data
 	var sampleData []byte
 	if muted {
@@ -186,7 +194,7 @@ func (r *AudioRelay) forwardToWebRTC(frame []byte) error {
 		sampleData = frame
 	}
 
-	// Write sample to WebRTC track
+	// Write sample to WebRTC track while holding the read lock
 	return audioTrack.WriteSample(media.Sample{
 		Data:     sampleData,
 		Duration: config.FrameSize,

internal/audio/supervisor.go

@@ -17,16 +17,22 @@ import (
 	"github.com/rs/zerolog"
 )
 
-const (
-	// Maximum number of restart attempts within the restart window
-	maxRestartAttempts = 5
-	// Time window for counting restart attempts
-	restartWindow = 5 * time.Minute
-	// Delay between restart attempts
-	restartDelay = 2 * time.Second
-	// Maximum restart delay (exponential backoff)
-	maxRestartDelay = 30 * time.Second
-)
+// Restart configuration is now retrieved from centralized config
+func getMaxRestartAttempts() int {
+	return GetConfig().MaxRestartAttempts
+}
+
+func getRestartWindow() time.Duration {
+	return GetConfig().RestartWindow
+}
+
+func getRestartDelay() time.Duration {
+	return GetConfig().RestartDelay
+}
+
+func getMaxRestartDelay() time.Duration {
+	return GetConfig().MaxRestartDelay
+}
 
 // AudioServerSupervisor manages the audio server subprocess lifecycle
 type AudioServerSupervisor struct {
@@ -95,6 +101,14 @@ func (s *AudioServerSupervisor) Start() error {
 
 	s.logger.Info().Msg("starting audio server supervisor")
 
+	// Recreate channels in case they were closed by a previous Stop() call
+	s.mutex.Lock()
+	s.processDone = make(chan struct{})
+	s.stopChan = make(chan struct{})
+	// Recreate context as well since it might have been cancelled
+	s.ctx, s.cancel = context.WithCancel(context.Background())
+	s.mutex.Unlock()
+
 	// Start the supervision loop
 	go s.supervisionLoop()
 
@@ -387,13 +401,13 @@ func (s *AudioServerSupervisor) shouldRestart() bool {
 	now := time.Now()
 	var recentAttempts []time.Time
 	for _, attempt := range s.restartAttempts {
-		if now.Sub(attempt) < restartWindow {
+		if now.Sub(attempt) < getRestartWindow() {
 			recentAttempts = append(recentAttempts, attempt)
 		}
 	}
 	s.restartAttempts = recentAttempts
 
-	return len(s.restartAttempts) < maxRestartAttempts
+	return len(s.restartAttempts) < getMaxRestartAttempts()
 }
 
 // recordRestartAttempt records a restart attempt
@@ -412,17 +426,17 @@ func (s *AudioServerSupervisor) calculateRestartDelay() time.Duration {
 	// Exponential backoff based on recent restart attempts
 	attempts := len(s.restartAttempts)
 	if attempts == 0 {
-		return restartDelay
+		return getRestartDelay()
 	}
 
 	// Calculate exponential backoff: 2^attempts * base delay
-	delay := restartDelay
-	for i := 0; i < attempts && delay < maxRestartDelay; i++ {
+	delay := getRestartDelay()
+	for i := 0; i < attempts && delay < getMaxRestartDelay(); i++ {
 		delay *= 2
 	}
 
-	if delay > maxRestartDelay {
-		delay = maxRestartDelay
+	if delay > getMaxRestartDelay() {
+		delay = getMaxRestartDelay()
 	}
 
 	return delay

internal/audio/zero_copy.go

@@ -262,7 +262,7 @@ type ZeroCopyFramePoolStats struct {
 }
 
 var (
-	globalZeroCopyPool = NewZeroCopyFramePool(MaxAudioFrameSize)
+	globalZeroCopyPool = NewZeroCopyFramePool(GetMaxAudioFrameSize())
 )
 
 // GetZeroCopyFrame gets a frame from the global pool
@@ -284,16 +284,17 @@ func PutZeroCopyFrame(frame *ZeroCopyAudioFrame) {
 func ZeroCopyAudioReadEncode() (*ZeroCopyAudioFrame, error) {
 	frame := GetZeroCopyFrame()
 
+	maxFrameSize := GetMaxAudioFrameSize()
 	// Ensure frame has enough capacity
-	if frame.Capacity() < MaxAudioFrameSize {
+	if frame.Capacity() < maxFrameSize {
 		// Reallocate if needed
-		frame.data = make([]byte, MaxAudioFrameSize)
-		frame.capacity = MaxAudioFrameSize
+		frame.data = make([]byte, maxFrameSize)
+		frame.capacity = maxFrameSize
 		frame.pooled = false
 	}
 
 	// Use unsafe pointer for direct CGO call
-	n, err := CGOAudioReadEncode(frame.data[:MaxAudioFrameSize])
+	n, err := CGOAudioReadEncode(frame.data[:maxFrameSize])
 	if err != nil {
 		PutZeroCopyFrame(frame)
 		return nil, err

internal/usbgadget/changeset_resolver.go

@@ -1,7 +1,9 @@
 package usbgadget
 
 import (
+	"context"
 	"fmt"
+	"time"
 
 	"github.com/rs/zerolog"
 	"github.com/sourcegraph/tf-dag/dag"
@@ -114,7 +116,20 @@ func (c *ChangeSetResolver) resolveChanges(initial bool) error {
 }
 
 func (c *ChangeSetResolver) applyChanges() error {
+	return c.applyChangesWithTimeout(45 * time.Second)
+}
+
+func (c *ChangeSetResolver) applyChangesWithTimeout(timeout time.Duration) error {
+	ctx, cancel := context.WithTimeout(context.Background(), timeout)
+	defer cancel()
+
 	for _, change := range c.resolvedChanges {
+		select {
+		case <-ctx.Done():
+			return fmt.Errorf("USB gadget reconfiguration timed out after %v: %w", timeout, ctx.Err())
+		default:
+		}
+
 		change.ResetActionResolution()
 		action := change.Action()
 		actionStr := FileChangeResolvedActionString[action]
@@ -126,7 +141,7 @@ func (c *ChangeSetResolver) applyChanges() error {
 
 		l.Str("action", actionStr).Str("change", change.String()).Msg("applying change")
 
-		err := c.changeset.applyChange(change)
+		err := c.applyChangeWithTimeout(ctx, change)
 		if err != nil {
 			if change.IgnoreErrors {
 				c.l.Warn().Str("change", change.String()).Err(err).Msg("ignoring error")
@@ -139,6 +154,20 @@ func (c *ChangeSetResolver) applyChanges() error {
 	return nil
 }
 
+func (c *ChangeSetResolver) applyChangeWithTimeout(ctx context.Context, change *FileChange) error {
+	done := make(chan error, 1)
+	go func() {
+		done <- c.changeset.applyChange(change)
+	}()
+
+	select {
+	case err := <-done:
+		return err
+	case <-ctx.Done():
+		return fmt.Errorf("change application timed out for %s: %w", change.String(), ctx.Err())
+	}
+}
+
 func (c *ChangeSetResolver) GetChanges() ([]*FileChange, error) {
 	localChanges := c.changeset.Changes
 	changesMap := make(map[string]*FileChange)

internal/usbgadget/config.go

@@ -213,11 +213,17 @@ func (u *UsbGadget) UpdateGadgetConfig() error {
 
 	u.loadGadgetConfig()
 
+	// Close HID files before reconfiguration to prevent "file already closed" errors
+	u.CloseHidFiles()
+
 	err := u.configureUsbGadget(true)
 	if err != nil {
 		return u.logError("unable to update gadget config", err)
 	}
 
+	// Reopen HID files after reconfiguration
+	u.PreOpenHidFiles()
+
 	return nil
 }
 

internal/usbgadget/config_tx.go

@@ -1,10 +1,12 @@
 package usbgadget
 
 import (
+	"context"
 	"fmt"
 	"path"
 	"path/filepath"
 	"sort"
+	"time"
 
 	"github.com/rs/zerolog"
 )
@@ -52,22 +54,50 @@ func (u *UsbGadget) newUsbGadgetTransaction(lock bool) error {
 }
 
 func (u *UsbGadget) WithTransaction(fn func() error) error {
-	u.txLock.Lock()
-	defer u.txLock.Unlock()
+	return u.WithTransactionTimeout(fn, 60*time.Second)
+}
 
-	err := u.newUsbGadgetTransaction(false)
-	if err != nil {
-		u.log.Error().Err(err).Msg("failed to create transaction")
-		return err
-	}
-	if err := fn(); err != nil {
-		u.log.Error().Err(err).Msg("transaction failed")
-		return err
-	}
-	result := u.tx.Commit()
-	u.tx = nil
+// WithTransactionTimeout executes a USB gadget transaction with a specified timeout
+// to prevent indefinite blocking during USB reconfiguration operations
+func (u *UsbGadget) WithTransactionTimeout(fn func() error, timeout time.Duration) error {
+	// Create a context with timeout for the entire transaction
+	ctx, cancel := context.WithTimeout(context.Background(), timeout)
+	defer cancel()
 
-	return result
+	// Channel to signal when the transaction is complete
+	done := make(chan error, 1)
+
+	// Execute the transaction in a goroutine
+	go func() {
+		u.txLock.Lock()
+		defer u.txLock.Unlock()
+
+		err := u.newUsbGadgetTransaction(false)
+		if err != nil {
+			u.log.Error().Err(err).Msg("failed to create transaction")
+			done <- err
+			return
+		}
+
+		if err := fn(); err != nil {
+			u.log.Error().Err(err).Msg("transaction failed")
+			done <- err
+			return
+		}
+
+		result := u.tx.Commit()
+		u.tx = nil
+		done <- result
+	}()
+
+	// Wait for either completion or timeout
+	select {
+	case err := <-done:
+		return err
+	case <-ctx.Done():
+		u.log.Error().Dur("timeout", timeout).Msg("USB gadget transaction timed out")
+		return fmt.Errorf("USB gadget transaction timed out after %v: %w", timeout, ctx.Err())
+	}
 }
 
 func (tx *UsbGadgetTransaction) addFileChange(component string, change RequestedFileChange) string {

internal/usbgadget/udc.go

@@ -1,10 +1,12 @@
 package usbgadget
 
 import (
+	"context"
 	"fmt"
 	"os"
 	"path"
 	"strings"
+	"time"
 )
 
 func getUdcs() []string {
@@ -26,17 +28,44 @@ func getUdcs() []string {
 }
 
 func rebindUsb(udc string, ignoreUnbindError bool) error {
-	err := os.WriteFile(path.Join(dwc3Path, "unbind"), []byte(udc), 0644)
+	return rebindUsbWithTimeout(udc, ignoreUnbindError, 10*time.Second)
+}
+
+func rebindUsbWithTimeout(udc string, ignoreUnbindError bool, timeout time.Duration) error {
+	ctx, cancel := context.WithTimeout(context.Background(), timeout)
+	defer cancel()
+
+	// Unbind with timeout
+	err := writeFileWithTimeout(ctx, path.Join(dwc3Path, "unbind"), []byte(udc), 0644)
 	if err != nil && !ignoreUnbindError {
-		return err
+		return fmt.Errorf("failed to unbind UDC: %w", err)
 	}
-	err = os.WriteFile(path.Join(dwc3Path, "bind"), []byte(udc), 0644)
+
+	// Small delay to allow unbind to complete
+	time.Sleep(100 * time.Millisecond)
+
+	// Bind with timeout
+	err = writeFileWithTimeout(ctx, path.Join(dwc3Path, "bind"), []byte(udc), 0644)
 	if err != nil {
-		return err
+		return fmt.Errorf("failed to bind UDC: %w", err)
 	}
 	return nil
 }
 
+func writeFileWithTimeout(ctx context.Context, filename string, data []byte, perm os.FileMode) error {
+	done := make(chan error, 1)
+	go func() {
+		done <- os.WriteFile(filename, data, perm)
+	}()
+
+	select {
+	case err := <-done:
+		return err
+	case <-ctx.Done():
+		return fmt.Errorf("write operation timed out: %w", ctx.Err())
+	}
+}
+
 func (u *UsbGadget) rebindUsb(ignoreUnbindError bool) error {
 	u.log.Info().Str("udc", u.udc).Msg("rebinding USB gadget to UDC")
 	return rebindUsb(u.udc, ignoreUnbindError)

internal/usbgadget/usbgadget.go

@@ -95,8 +95,41 @@ func NewUsbGadget(name string, enabledDevices *Devices, config *Config, logger *
 	return newUsbGadget(name, defaultGadgetConfig, enabledDevices, config, logger)
 }
 
+// CloseHidFiles closes all open HID files
+func (u *UsbGadget) CloseHidFiles() {
+	u.log.Debug().Msg("closing HID files")
+
+	// Close keyboard HID file
+	if u.keyboardHidFile != nil {
+		if err := u.keyboardHidFile.Close(); err != nil {
+			u.log.Debug().Err(err).Msg("failed to close keyboard HID file")
+		}
+		u.keyboardHidFile = nil
+	}
+
+	// Close absolute mouse HID file
+	if u.absMouseHidFile != nil {
+		if err := u.absMouseHidFile.Close(); err != nil {
+			u.log.Debug().Err(err).Msg("failed to close absolute mouse HID file")
+		}
+		u.absMouseHidFile = nil
+	}
+
+	// Close relative mouse HID file
+	if u.relMouseHidFile != nil {
+		if err := u.relMouseHidFile.Close(); err != nil {
+			u.log.Debug().Err(err).Msg("failed to close relative mouse HID file")
+		}
+		u.relMouseHidFile = nil
+	}
+}
+
 // PreOpenHidFiles opens all HID files to reduce input latency
 func (u *UsbGadget) PreOpenHidFiles() {
+	// Add a small delay to allow USB gadget reconfiguration to complete
+	// This prevents "no such device or address" errors when trying to open HID files
+	time.Sleep(100 * time.Millisecond)
+
 	if u.enabledDevices.Keyboard {
 		if err := u.openKeyboardHidFile(); err != nil {
 			u.log.Debug().Err(err).Msg("failed to pre-open keyboard HID file")

jsonrpc.go

@@ -15,6 +15,7 @@ import (
 	"github.com/pion/webrtc/v4"
 	"go.bug.st/serial"
 
+	"github.com/jetkvm/kvm/internal/audio"
 	"github.com/jetkvm/kvm/internal/usbgadget"
 )
 
@@ -907,10 +908,121 @@ func updateUsbRelatedConfig() error {
 	return nil
 }
 
+// validateAudioConfiguration checks if audio functionality can be enabled
+func validateAudioConfiguration(enabled bool) error {
+	if !enabled {
+		return nil // Disabling audio is always allowed
+	}
+
+	// Check if audio supervisor is available
+	if audioSupervisor == nil {
+		return fmt.Errorf("audio supervisor not initialized - audio functionality not available")
+	}
+
+	// Check if ALSA devices are available by attempting to list them
+	// This is a basic check to ensure the system has audio capabilities
+	if _, err := os.Stat("/proc/asound/cards"); os.IsNotExist(err) {
+		return fmt.Errorf("no ALSA sound cards detected - audio hardware not available")
+	}
+
+	// Check if USB gadget audio function is supported
+	if _, err := os.Stat("/sys/kernel/config/usb_gadget"); os.IsNotExist(err) {
+		return fmt.Errorf("USB gadget configfs not available - cannot enable USB audio")
+	}
+
+	return nil
+}
+
 func rpcSetUsbDevices(usbDevices usbgadget.Devices) error {
+	// Validate audio configuration before proceeding
+	if err := validateAudioConfiguration(usbDevices.Audio); err != nil {
+		logger.Warn().Err(err).Msg("audio configuration validation failed")
+		return fmt.Errorf("audio validation failed: %w", err)
+	}
+
+	// Check if audio state is changing
+	previousAudioEnabled := config.UsbDevices != nil && config.UsbDevices.Audio
+	newAudioEnabled := usbDevices.Audio
+
+	// Handle audio process management if state is changing
+	if previousAudioEnabled != newAudioEnabled {
+		if !newAudioEnabled {
+			// Stop audio processes when audio is disabled
+			logger.Info().Msg("stopping audio processes due to audio device being disabled")
+
+			// Stop audio input manager if active
+			if currentSession != nil && currentSession.AudioInputManager != nil && currentSession.AudioInputManager.IsRunning() {
+				logger.Info().Msg("stopping audio input manager")
+				currentSession.AudioInputManager.Stop()
+				// Wait for audio input to fully stop
+				for i := 0; i < 50; i++ { // Wait up to 5 seconds
+					if !currentSession.AudioInputManager.IsRunning() {
+						break
+					}
+					time.Sleep(100 * time.Millisecond)
+				}
+				logger.Info().Msg("audio input manager stopped")
+			}
+
+			// Stop audio output supervisor
+			if audioSupervisor != nil && audioSupervisor.IsRunning() {
+				logger.Info().Msg("stopping audio output supervisor")
+				if err := audioSupervisor.Stop(); err != nil {
+					logger.Error().Err(err).Msg("failed to stop audio supervisor")
+				}
+				// Wait for audio processes to fully stop before proceeding
+				for i := 0; i < 50; i++ { // Wait up to 5 seconds
+					if !audioSupervisor.IsRunning() {
+						break
+					}
+					time.Sleep(100 * time.Millisecond)
+				}
+				logger.Info().Msg("audio output supervisor stopped")
+			}
+
+			logger.Info().Msg("audio processes stopped, proceeding with USB gadget reconfiguration")
+		} else if newAudioEnabled && audioSupervisor != nil && !audioSupervisor.IsRunning() {
+			// Start audio processes when audio is enabled (after USB reconfiguration)
+			logger.Info().Msg("audio will be started after USB gadget reconfiguration")
+		}
+	}
+
 	config.UsbDevices = &usbDevices
 	gadget.SetGadgetDevices(config.UsbDevices)
-	return updateUsbRelatedConfig()
+
+	// Apply USB gadget configuration changes
+	err := updateUsbRelatedConfig()
+	if err != nil {
+		return err
+	}
+
+	// Start audio processes after successful USB reconfiguration if needed
+	if previousAudioEnabled != newAudioEnabled && newAudioEnabled && audioSupervisor != nil {
+		// Ensure supervisor is fully stopped before starting
+		for i := 0; i < 50; i++ { // Wait up to 5 seconds
+			if !audioSupervisor.IsRunning() {
+				break
+			}
+			time.Sleep(100 * time.Millisecond)
+		}
+		logger.Info().Msg("starting audio processes after USB gadget reconfiguration")
+		if err := audioSupervisor.Start(); err != nil {
+			logger.Error().Err(err).Msg("failed to start audio supervisor")
+			// Don't return error here as USB reconfiguration was successful
+		} else {
+			// Broadcast audio device change event to notify WebRTC session
+			broadcaster := audio.GetAudioEventBroadcaster()
+			broadcaster.BroadcastAudioDeviceChanged(true, "usb_reconfiguration")
+			logger.Info().Msg("broadcasted audio device change event after USB reconfiguration")
+		}
+	} else if previousAudioEnabled != newAudioEnabled {
+		// Broadcast audio device change event for disabling audio
+		broadcaster := audio.GetAudioEventBroadcaster()
+		broadcaster.BroadcastAudioDeviceChanged(newAudioEnabled, "usb_reconfiguration")
+		logger.Info().Bool("enabled", newAudioEnabled).Msg("broadcasted audio device change event after USB reconfiguration")
+	}
+
+	return nil
 }
 
 func rpcSetUsbDeviceState(device string, enabled bool) error {
@@ -923,6 +1035,70 @@ func rpcSetUsbDeviceState(device string, enabled bool) error {
 		config.UsbDevices.Keyboard = enabled
 	case "massStorage":
 		config.UsbDevices.MassStorage = enabled
+	case "audio":
+		// Validate audio configuration before proceeding
+		if err := validateAudioConfiguration(enabled); err != nil {
+			logger.Warn().Err(err).Msg("audio device state validation failed")
+			return fmt.Errorf("audio validation failed: %w", err)
+		}
+		// Handle audio process management
+		if !enabled {
+			// Stop audio processes when audio is disabled
+			logger.Info().Msg("stopping audio processes due to audio device being disabled")
+
+			// Stop audio input manager if active
+			if currentSession != nil && currentSession.AudioInputManager != nil && currentSession.AudioInputManager.IsRunning() {
+				logger.Info().Msg("stopping audio input manager")
+				currentSession.AudioInputManager.Stop()
+				// Wait for audio input to fully stop
+				for i := 0; i < 50; i++ { // Wait up to 5 seconds
+					if !currentSession.AudioInputManager.IsRunning() {
+						break
+					}
+					time.Sleep(100 * time.Millisecond)
+				}
+				logger.Info().Msg("audio input manager stopped")
+			}
+
+			// Stop audio output supervisor
+			if audioSupervisor != nil && audioSupervisor.IsRunning() {
+				logger.Info().Msg("stopping audio output supervisor")
+				if err := audioSupervisor.Stop(); err != nil {
+					logger.Error().Err(err).Msg("failed to stop audio supervisor")
+				}
+				// Wait for audio processes to fully stop
+				for i := 0; i < 50; i++ { // Wait up to 5 seconds
+					if !audioSupervisor.IsRunning() {
+						break
+					}
+					time.Sleep(100 * time.Millisecond)
+				}
+				logger.Info().Msg("audio output supervisor stopped")
+			}
+		} else if enabled && audioSupervisor != nil {
+			// Ensure supervisor is fully stopped before starting
+			for i := 0; i < 50; i++ { // Wait up to 5 seconds
+				if !audioSupervisor.IsRunning() {
+					break
+				}
+				time.Sleep(100 * time.Millisecond)
+			}
+			// Start audio processes when audio is enabled
+			logger.Info().Msg("starting audio processes due to audio device being enabled")
+			if err := audioSupervisor.Start(); err != nil {
+				logger.Error().Err(err).Msg("failed to start audio supervisor")
+			} else {
+				// Broadcast audio device change event to notify WebRTC session
+				broadcaster := audio.GetAudioEventBroadcaster()
+				broadcaster.BroadcastAudioDeviceChanged(true, "device_enabled")
+				logger.Info().Msg("broadcasted audio device change event after enabling audio device")
+			}
+			// Always broadcast the audio device change event regardless of enable/disable
+			broadcaster := audio.GetAudioEventBroadcaster()
+			broadcaster.BroadcastAudioDeviceChanged(enabled, "device_state_changed")
+			logger.Info().Bool("enabled", enabled).Msg("broadcasted audio device state change event")
+		}
+		config.UsbDevices.Audio = enabled
 	default:
 		return fmt.Errorf("invalid device: %s", device)
 	}

main.go

@@ -11,6 +11,7 @@ import (
 
 	"github.com/gwatts/rootcerts"
 	"github.com/jetkvm/kvm/internal/audio"
+	"github.com/pion/webrtc/v4"
 )
 
 var (
@@ -46,9 +47,17 @@ func startAudioSubprocess() error {
 		func(pid int) {
 			logger.Info().Int("pid", pid).Msg("audio server process started")
 
-			// Start audio relay system for main process without a track initially
-			// The track will be updated when a WebRTC session is created
-			if err := audio.StartAudioRelay(nil); err != nil {
+			// Start audio relay system for main process
+			// If there's an active WebRTC session, use its audio track
+			var audioTrack *webrtc.TrackLocalStaticSample
+			if currentSession != nil && currentSession.AudioTrack != nil {
+				audioTrack = currentSession.AudioTrack
+				logger.Info().Msg("restarting audio relay with existing WebRTC audio track")
+			} else {
+				logger.Info().Msg("starting audio relay without WebRTC track (will be updated when session is created)")
+			}
+
+			if err := audio.StartAudioRelay(audioTrack); err != nil {
 				logger.Error().Err(err).Msg("failed to start audio relay")
 			}
 		},

ui/src/components/ActionBar.tsx

@@ -21,6 +21,7 @@ import ExtensionPopover from "@/components/popovers/ExtensionPopover";
 import AudioControlPopover from "@/components/popovers/AudioControlPopover";
 import { useDeviceUiNavigation } from "@/hooks/useAppNavigation";
 import { useAudioEvents } from "@/hooks/useAudioEvents";
+import { useUsbDeviceConfig } from "@/hooks/useUsbDeviceConfig";
 
 
 // Type for microphone error
@@ -87,6 +88,10 @@ export default function Actionbar({
   
   // Use WebSocket data exclusively - no polling fallback
   const isMuted = audioMuted ?? false; // Default to false if WebSocket data not available yet
+  
+  // Get USB device configuration to check if audio is enabled
+  const { usbDeviceConfig } = useUsbDeviceConfig();
+  const isAudioEnabledInUsb = usbDeviceConfig?.audio ?? true; // Default to true while loading
 
   return (
     <Container className="border-b border-b-slate-800/20 bg-white dark:border-b-slate-300/20 dark:bg-slate-900">
@@ -316,25 +321,32 @@ export default function Actionbar({
             />
           </div>
           <Popover>
-            <PopoverButton as={Fragment}>
-              <Button
-                size="XS"
-                theme="light"
-                text="Audio"
-                LeadingIcon={({ className }) => (
-                  <div className="flex items-center">
-                    {isMuted ? (
-                      <MdVolumeOff className={cx(className, "text-red-500")} />
-                    ) : (
-                      <MdVolumeUp className={cx(className, "text-green-500")} />
-                    )}
-                    <MdGraphicEq className={cx(className, "ml-1 text-blue-500")} />
-                  </div>
-                )}
-                onClick={() => {
-                  setDisableFocusTrap(true);
-                }}
-              />
+            <PopoverButton as={Fragment} disabled={!isAudioEnabledInUsb}>
+              <div title={!isAudioEnabledInUsb ? "Audio needs to be enabled in USB device settings" : undefined}>
+                <Button
+                  size="XS"
+                  theme="light"
+                  text="Audio"
+                  disabled={!isAudioEnabledInUsb}
+                  LeadingIcon={({ className }) => (
+                    <div className="flex items-center">
+                      {!isAudioEnabledInUsb ? (
+                        <MdVolumeOff className={cx(className, "text-gray-400")} />
+                      ) : isMuted ? (
+                        <MdVolumeOff className={cx(className, "text-red-500")} />
+                      ) : (
+                        <MdVolumeUp className={cx(className, "text-green-500")} />
+                      )}
+                      <MdGraphicEq className={cx(className, "ml-1", !isAudioEnabledInUsb ? "text-gray-400" : "text-blue-500")} />
+                    </div>
+                  )}
+                  onClick={() => {
+                    if (isAudioEnabledInUsb) {
+                      setDisableFocusTrap(true);
+                    }
+                  }}
+                />
+              </div>
             </PopoverButton>
             <PopoverPanel
               anchor="bottom end"

ui/src/components/AudioMetricsDashboard.tsx

@@ -122,8 +122,8 @@ export default function AudioMetricsDashboard() {
         const response = await api.GET('/system/memory');
         const data = await response.json();
         setSystemMemoryMB(data.total_memory_mb);
-      } catch (error) {
-        console.warn('Failed to fetch system memory, using default:', error);
+      } catch {
+        // Failed to fetch system memory, using default
       }
     };
     fetchSystemMemory();
@@ -260,8 +260,8 @@ export default function AudioMetricsDashboard() {
           const micConfigData = await micConfigResp.json();
           setMicrophoneConfig(micConfigData.current);
         }
-      } catch (micConfigError) {
-        console.debug("Microphone config not available:", micConfigError);
+      } catch {
+        // Microphone config not available
       }
     } catch (error) {
       console.error("Failed to load audio config:", error);
@@ -321,8 +321,8 @@ export default function AudioMetricsDashboard() {
             });
           }
         }
-      } catch (audioProcessError) {
-        console.debug("Audio process metrics not available:", audioProcessError);
+      } catch {
+        // Audio process metrics not available
       }
 
       // Load microphone metrics
@@ -332,9 +332,9 @@ export default function AudioMetricsDashboard() {
           const micData = await micResp.json();
           setFallbackMicrophoneMetrics(micData);
         }
-      } catch (micError) {
+      } catch {
         // Microphone metrics might not be available, that's okay
-        console.debug("Microphone metrics not available:", micError);
+        // Microphone metrics not available
       }
 
       // Load microphone process metrics
@@ -374,8 +374,8 @@ export default function AudioMetricsDashboard() {
             return newMap;
           });
         }
-      } catch (micProcessError) {
-        console.debug("Microphone process metrics not available:", micProcessError);
+      } catch {
+        // Microphone process metrics not available
       }
     } catch (error) {
       console.error("Failed to load audio data:", error);

ui/src/components/InfoBar.tsx

@@ -32,9 +32,8 @@ export default function InfoBar() {
 
   useEffect(() => {
     if (!rpcDataChannel) return;
-    rpcDataChannel.onclose = () => console.log("rpcDataChannel has closed");
-    rpcDataChannel.onerror = e =>
-      console.log(`Error on DataChannel '${rpcDataChannel.label}': ${e}`);
+    rpcDataChannel.onclose = () => { /* RPC data channel closed */ };
+    rpcDataChannel.onerror = () => { /* Error on RPC data channel */ };
   }, [rpcDataChannel]);
 
   const keyboardLedState = useHidStore(state => state.keyboardLedState);

ui/src/components/UsbDeviceSetting.tsx

@@ -22,6 +22,7 @@ export interface UsbDeviceConfig {
   absolute_mouse: boolean;
   relative_mouse: boolean;
   mass_storage: boolean;
+  audio: boolean;
 }
 
 const defaultUsbDeviceConfig: UsbDeviceConfig = {
@@ -29,17 +30,30 @@ const defaultUsbDeviceConfig: UsbDeviceConfig = {
   absolute_mouse: true,
   relative_mouse: true,
   mass_storage: true,
+  audio: true,
 };
 
 const usbPresets = [
   {
-    label: "Keyboard, Mouse and Mass Storage",
+    label: "Keyboard, Mouse, Mass Storage and Audio",
     value: "default",
     config: {
       keyboard: true,
       absolute_mouse: true,
       relative_mouse: true,
       mass_storage: true,
+      audio: true,
+    },
+  },
+  {
+    label: "Keyboard, Mouse and Mass Storage",
+    value: "no_audio",
+    config: {
+      keyboard: true,
+      absolute_mouse: true,
+      relative_mouse: true,
+      mass_storage: true,
+      audio: false,
     },
   },
   {
@@ -50,6 +64,7 @@ const usbPresets = [
       absolute_mouse: false,
       relative_mouse: false,
       mass_storage: false,
+      audio: false,
     },
   },
   {
@@ -217,6 +232,17 @@ export function UsbDeviceSetting() {
                 />
               </SettingsItem>
             </div>
+            <div className="space-y-4">
+              <SettingsItem
+                title="Enable Audio Input/Output"
+                description="Enable USB audio input and output devices"
+              >
+                <Checkbox
+                  checked={usbDeviceConfig.audio}
+                  onChange={onUsbConfigItemChange("audio")}
+                />
+              </SettingsItem>
+            </div>
           </div>
           <div className="mt-6 flex gap-x-2">
             <Button

ui/src/components/popovers/AudioControlPopover.tsx

@@ -155,8 +155,8 @@ export default function AudioControlPopover({ microphone, open }: AudioControlPo
       }
       
       setConfigsLoaded(true);
-    } catch (error) {
-      console.error("Failed to load audio configurations:", error);
+    } catch {
+      // Failed to load audio configurations
     }
   };
 
@@ -165,11 +165,11 @@ export default function AudioControlPopover({ microphone, open }: AudioControlPo
     try {
       const resp = await api.POST("/audio/mute", { muted: !isMuted });
       if (!resp.ok) {
-        console.error("Failed to toggle mute:", resp.statusText);
+        // Failed to toggle mute
       }
       // WebSocket will handle the state update automatically
-    } catch (error) {
-      console.error("Failed to toggle mute:", error);
+    } catch {
+      // Failed to toggle mute
     } finally {
       setIsLoading(false);
     }
@@ -183,8 +183,8 @@ export default function AudioControlPopover({ microphone, open }: AudioControlPo
         const data = await resp.json();
         setCurrentConfig(data.config);
       }
-    } catch (error) {
-      console.error("Failed to change audio quality:", error);
+    } catch {
+      // Failed to change audio quality
     } finally {
       setIsLoading(false);
     }
@@ -197,8 +197,8 @@ export default function AudioControlPopover({ microphone, open }: AudioControlPo
         const data = await resp.json();
         setCurrentMicrophoneConfig(data.config);
       }
-    } catch (error) {
-      console.error("Failed to change microphone quality:", error);
+    } catch {
+      // Failed to change microphone quality
     }
   };
 
@@ -217,8 +217,8 @@ export default function AudioControlPopover({ microphone, open }: AudioControlPo
       if (!result.success && result.error) {
         notifications.error(result.error.message);
       }
-    } catch (error) {
-      console.error("Failed to toggle microphone:", error);
+    } catch {
+      // Failed to toggle microphone
       notifications.error("An unexpected error occurred");
     }
   };
@@ -238,8 +238,8 @@ export default function AudioControlPopover({ microphone, open }: AudioControlPo
       if (!result.success && result.error) {
         notifications.error(result.error.message);
       }
-    } catch (error) {
-      console.error("Failed to toggle microphone mute:", error);
+    } catch {
+      // Failed to toggle microphone mute
       notifications.error("Failed to toggle microphone mute");
     }
   };
@@ -258,8 +258,8 @@ export default function AudioControlPopover({ microphone, open }: AudioControlPo
         if (!result.success && result.error) {
           notifications.error(result.error.message);
         }
-      } catch (error) {
-        console.error("Failed to change microphone device:", error);
+      } catch {
+        // Failed to change microphone device
         notifications.error("Failed to change microphone device");
       }
     }
@@ -273,11 +273,11 @@ export default function AudioControlPopover({ microphone, open }: AudioControlPo
     if (videoElement && 'setSinkId' in videoElement) {
       try {
         await (videoElement as HTMLVideoElement & { setSinkId: (deviceId: string) => Promise<void> }).setSinkId(deviceId);
-      } catch (error: unknown) {
-        console.error('Failed to change audio output device:', error);
+      } catch {
+        // Failed to change audio output device
       }
     } else {
-      console.warn('setSinkId not supported or video element not found');
+      // setSinkId not supported or video element not found
     }
   };
 

ui/src/hooks/stores.ts

@@ -845,7 +845,7 @@ export const useMacrosStore = create<MacrosState>((set, get) => ({
 
     const { sendFn } = get();
     if (!sendFn) {
-      console.warn("JSON-RPC send function not available.");
+      // console.warn("JSON-RPC send function not available.");
       return;
     }
 
@@ -855,7 +855,7 @@ export const useMacrosStore = create<MacrosState>((set, get) => ({
       await new Promise<void>((resolve, reject) => {
         sendFn("getKeyboardMacros", {}, (response: JsonRpcResponse) => {
           if (response.error) {
-            console.error("Error loading macros:", response.error);
+            // console.error("Error loading macros:", response.error);
             reject(new Error(response.error.message));
             return;
           }
@@ -879,8 +879,8 @@ export const useMacrosStore = create<MacrosState>((set, get) => ({
           resolve();
         });
       });
-    } catch (error) {
-      console.error("Failed to load macros:", error);
+    } catch {
+      // console.error("Failed to load macros:", _error);
     } finally {
       set({ loading: false });
     }
@@ -889,20 +889,20 @@ export const useMacrosStore = create<MacrosState>((set, get) => ({
   saveMacros: async (macros: KeySequence[]) => {
     const { sendFn } = get();
     if (!sendFn) {
-      console.warn("JSON-RPC send function not available.");
+      // console.warn("JSON-RPC send function not available.");
       throw new Error("JSON-RPC send function not available");
     }
 
     if (macros.length > MAX_TOTAL_MACROS) {
-      console.error(`Cannot save: exceeded maximum of ${MAX_TOTAL_MACROS} macros`);
+      // console.error(`Cannot save: exceeded maximum of ${MAX_TOTAL_MACROS} macros`);
       throw new Error(`Cannot save: exceeded maximum of ${MAX_TOTAL_MACROS} macros`);
     }
 
     for (const macro of macros) {
       if (macro.steps.length > MAX_STEPS_PER_MACRO) {
-        console.error(
-          `Cannot save: macro "${macro.name}" exceeds maximum of ${MAX_STEPS_PER_MACRO} steps`,
-        );
+        // console.error(
+        //   `Cannot save: macro "${macro.name}" exceeds maximum of ${MAX_STEPS_PER_MACRO} steps`,
+        // );
         throw new Error(
           `Cannot save: macro "${macro.name}" exceeds maximum of ${MAX_STEPS_PER_MACRO} steps`,
         );
@@ -911,9 +911,9 @@ export const useMacrosStore = create<MacrosState>((set, get) => ({
       for (let i = 0; i < macro.steps.length; i++) {
         const step = macro.steps[i];
         if (step.keys && step.keys.length > MAX_KEYS_PER_STEP) {
-          console.error(
-            `Cannot save: macro "${macro.name}" step ${i + 1} exceeds maximum of ${MAX_KEYS_PER_STEP} keys`,
-          );
+          // console.error(
+          //   `Cannot save: macro "${macro.name}" step ${i + 1} exceeds maximum of ${MAX_KEYS_PER_STEP} keys`,
+          // );
           throw new Error(
             `Cannot save: macro "${macro.name}" step ${i + 1} exceeds maximum of ${MAX_KEYS_PER_STEP} keys`,
           );
@@ -940,7 +940,7 @@ export const useMacrosStore = create<MacrosState>((set, get) => ({
       });
 
       if (response.error) {
-        console.error("Error saving macros:", response.error);
+        // console.error("Error saving macros:", response.error);
         const errorMessage =
           typeof response.error.data === "string"
             ? response.error.data
@@ -950,9 +950,6 @@ export const useMacrosStore = create<MacrosState>((set, get) => ({
 
       // Only update the store if the request was successful
       set({ macros: macrosWithSortOrder });
-    } catch (error) {
-      console.error("Failed to save macros:", error);
-      throw error;
     } finally {
       set({ loading: false });
     }

ui/src/hooks/useAudioDevices.ts

@@ -63,10 +63,7 @@ export function useAudioDevices(): UseAudioDevicesReturn {
       setAudioInputDevices(inputDevices);
       setAudioOutputDevices(outputDevices);
       
-      console.log('Audio devices enumerated:', {
-        inputs: inputDevices.length,
-        outputs: outputDevices.length
-      });
+      // Audio devices enumerated
       
     } catch (err) {
       console.error('Failed to enumerate audio devices:', err);
@@ -79,7 +76,7 @@ export function useAudioDevices(): UseAudioDevicesReturn {
   // Listen for device changes
   useEffect(() => {
     const handleDeviceChange = () => {
-      console.log('Audio devices changed, refreshing...');
+      // Audio devices changed, refreshing
       refreshDevices();
     };
 

ui/src/hooks/useAudioEvents.ts

@@ -8,7 +8,8 @@ export type AudioEventType =
   | 'microphone-state-changed'
   | 'microphone-metrics-update'
   | 'audio-process-metrics'
-  | 'microphone-process-metrics';
+  | 'microphone-process-metrics'
+  | 'audio-device-changed';
 
 // Audio event data interfaces
 export interface AudioMuteData {
@@ -48,10 +49,15 @@ export interface ProcessMetricsData {
   process_name: string;
 }
 
+export interface AudioDeviceChangedData {
+  enabled: boolean;
+  reason: string;
+}
+
 // Audio event structure
 export interface AudioEvent {
   type: AudioEventType;
-  data: AudioMuteData | AudioMetricsData | MicrophoneStateData | MicrophoneMetricsData | ProcessMetricsData;
+  data: AudioMuteData | AudioMetricsData | MicrophoneStateData | MicrophoneMetricsData | ProcessMetricsData | AudioDeviceChangedData;
 }
 
 // Hook return type
@@ -72,6 +78,9 @@ export interface UseAudioEventsReturn {
   audioProcessMetrics: ProcessMetricsData | null;
   microphoneProcessMetrics: ProcessMetricsData | null;
   
+  // Device change events
+  onAudioDeviceChanged?: (data: AudioDeviceChangedData) => void;
+  
   // Manual subscription control
   subscribe: () => void;
   unsubscribe: () => void;
@@ -84,7 +93,7 @@ const globalSubscriptionState = {
   connectionId: null as string | null
 };
 
-export function useAudioEvents(): UseAudioEventsReturn {
+export function useAudioEvents(onAudioDeviceChanged?: (data: AudioDeviceChangedData) => void): UseAudioEventsReturn {
   // State for audio data
   const [audioMuted, setAudioMuted] = useState<boolean | null>(null);
   const [audioMetrics, setAudioMetrics] = useState<AudioMetricsData | null>(null);
@@ -115,13 +124,13 @@ export function useAudioEvents(): UseAudioEventsReturn {
     reconnectInterval: 3000,
     share: true, // Share the WebSocket connection across multiple hooks
     onOpen: () => {
-      console.log('[AudioEvents] WebSocket connected');
+      // WebSocket connected
       // Reset global state on new connection
       globalSubscriptionState.isSubscribed = false;
       globalSubscriptionState.connectionId = Math.random().toString(36);
     },
     onClose: () => {
-      console.log('[AudioEvents] WebSocket disconnected');
+      // WebSocket disconnected
       // Reset global state on disconnect
       globalSubscriptionState.isSubscribed = false;
       globalSubscriptionState.subscriberCount = 0;
@@ -151,7 +160,7 @@ export function useAudioEvents(): UseAudioEventsReturn {
           
           sendMessage(JSON.stringify(subscribeMessage));
           globalSubscriptionState.isSubscribed = true;
-          console.log('[AudioEvents] Subscribed to audio events');
+          // Subscribed to audio events
         }
       }, 100); // 100ms delay to debounce subscription attempts
     }
@@ -188,11 +197,11 @@ export function useAudioEvents(): UseAudioEventsReturn {
         sendMessage(JSON.stringify(unsubscribeMessage));
         globalSubscriptionState.isSubscribed = false;
         globalSubscriptionState.subscriberCount = 0;
-        console.log('[AudioEvents] Sent unsubscribe message to backend');
+        // Sent unsubscribe message to backend
       }
     }
     
-    console.log('[AudioEvents] Component unsubscribed from audio events');
+    // Component unsubscribed from audio events
   }, [readyState, isLocallySubscribed, sendMessage]);
 
   // Handle incoming messages
@@ -209,7 +218,7 @@ export function useAudioEvents(): UseAudioEventsReturn {
             case 'audio-mute-changed': {
               const muteData = audioEvent.data as AudioMuteData;
               setAudioMuted(muteData.muted);
-              console.log('[AudioEvents] Audio mute changed:', muteData.muted);
+              // Audio mute changed
               break;
             }
               
@@ -222,7 +231,7 @@ export function useAudioEvents(): UseAudioEventsReturn {
             case 'microphone-state-changed': {
               const micStateData = audioEvent.data as MicrophoneStateData;
               setMicrophoneState(micStateData);
-              console.log('[AudioEvents] Microphone state changed:', micStateData);
+              // Microphone state changed
               break;
             }
               
@@ -244,6 +253,15 @@ export function useAudioEvents(): UseAudioEventsReturn {
               break;
             }
               
+            case 'audio-device-changed': {
+              const deviceChangedData = audioEvent.data as AudioDeviceChangedData;
+              // Audio device changed
+              if (onAudioDeviceChanged) {
+                onAudioDeviceChanged(deviceChangedData);
+              }
+              break;
+            }
+              
             default:
               // Ignore other message types (WebRTC signaling, etc.)
               break;
@@ -256,7 +274,7 @@ export function useAudioEvents(): UseAudioEventsReturn {
         }
       }
     }
-  }, [lastMessage]);
+  }, [lastMessage, onAudioDeviceChanged]);
 
   // Auto-subscribe when connected
   useEffect(() => {
@@ -309,6 +327,9 @@ export function useAudioEvents(): UseAudioEventsReturn {
     audioProcessMetrics,
     microphoneProcessMetrics,
     
+    // Device change events
+    onAudioDeviceChanged,
+    
     // Manual subscription control
     subscribe,
     unsubscribe,

ui/src/hooks/useAudioLevel.ts

@@ -104,8 +104,8 @@ export const useAudioLevel = (
       // Use setInterval instead of requestAnimationFrame for more predictable timing
       intervalRef.current = window.setInterval(updateLevel, updateInterval);
 
-    } catch (error) {
-      console.error('Failed to create audio level analyzer:', error);
+    } catch {
+      // Audio level analyzer creation failed - silently handle
       setIsAnalyzing(false);
       setAudioLevel(0);
     }

ui/src/hooks/useMicrophone.ts

@@ -57,19 +57,14 @@ export function useMicrophone() {
 
   // Cleanup function to stop microphone stream
   const stopMicrophoneStream = useCallback(async () => {
-    console.log("stopMicrophoneStream called - cleaning up stream");
-    console.trace("stopMicrophoneStream call stack");
+    // Cleaning up microphone stream
     
     if (microphoneStreamRef.current) {
-      console.log("Stopping microphone stream:", microphoneStreamRef.current.id);
       microphoneStreamRef.current.getTracks().forEach(track => {
         track.stop();
       });
       microphoneStreamRef.current = null;
       setMicrophoneStream(null);
-      console.log("Microphone stream cleared from ref and store");
-    } else {
-      console.log("No microphone stream to stop");
     }
 
     if (microphoneSender && peerConnection) {
@@ -217,17 +212,7 @@ export function useMicrophone() {
         audio: audioConstraints
       });
 
-      console.log("Microphone stream created successfully:", {
-        streamId: stream.id,
-        audioTracks: stream.getAudioTracks().length,
-        videoTracks: stream.getVideoTracks().length,
-        audioTrackDetails: stream.getAudioTracks().map(track => ({
-          id: track.id,
-          label: track.label,
-          enabled: track.enabled,
-          readyState: track.readyState
-        }))
-      });
+      // Microphone stream created successfully
 
       // Store the stream in both ref and store
       microphoneStreamRef.current = stream;
@@ -471,7 +456,7 @@ export function useMicrophone() {
       setIsStarting(false);
       return { success: true };
     } catch (error) {
-      console.error("Failed to start microphone:", error);
+      // Failed to start microphone
       
       let micError: MicrophoneError;
       if (error instanceof Error) {

ui/src/hooks/useUsbDeviceConfig.ts

@@ -0,0 +1,58 @@
+import { useCallback, useEffect, useState } from "react";
+
+import { JsonRpcResponse, useJsonRpc } from "./useJsonRpc";
+import { useAudioEvents } from "./useAudioEvents";
+
+export interface UsbDeviceConfig {
+  keyboard: boolean;
+  absolute_mouse: boolean;
+  relative_mouse: boolean;
+  mass_storage: boolean;
+  audio: boolean;
+}
+
+export function useUsbDeviceConfig() {
+  const { send } = useJsonRpc();
+  const [usbDeviceConfig, setUsbDeviceConfig] = useState<UsbDeviceConfig | null>(null);
+  const [loading, setLoading] = useState(true);
+  const [error, setError] = useState<string | null>(null);
+
+  const fetchUsbDeviceConfig = useCallback(() => {
+    setLoading(true);
+    setError(null);
+    
+    send("getUsbDevices", {}, (resp: JsonRpcResponse) => {
+      setLoading(false);
+      
+      if ("error" in resp) {
+        console.error("Failed to load USB devices:", resp.error);
+        setError(resp.error.data || "Unknown error");
+        setUsbDeviceConfig(null);
+      } else {
+        const config = resp.result as UsbDeviceConfig;
+        setUsbDeviceConfig(config);
+        setError(null);
+      }
+    });
+  }, [send]);
+
+  // Listen for audio device changes to update USB config in real-time
+  const handleAudioDeviceChanged = useCallback(() => {
+    // Audio device changed, refetching USB config
+    fetchUsbDeviceConfig();
+  }, [fetchUsbDeviceConfig]);
+
+  // Subscribe to audio events for real-time updates
+  useAudioEvents(handleAudioDeviceChanged);
+
+  useEffect(() => {
+    fetchUsbDeviceConfig();
+  }, [fetchUsbDeviceConfig]);
+
+  return {
+    usbDeviceConfig,
+    loading,
+    error,
+    refetch: fetchUsbDeviceConfig,
+  };
+}

ui/src/routes/devices.$id.tsx

@@ -34,6 +34,7 @@ import {
   VideoState,
 } from "@/hooks/stores";
 import { useMicrophone } from "@/hooks/useMicrophone";
+import { useAudioEvents } from "@/hooks/useAudioEvents";
 import WebRTCVideo from "@components/WebRTCVideo";
 import { checkAuth, isInCloud, isOnDevice } from "@/main";
 import DashboardNavbar from "@components/Header";
@@ -145,6 +146,8 @@ export default function KvmIdRoute() {
 
   // Microphone hook - moved here to prevent unmounting when popover closes
   const microphoneHook = useMicrophone();
+  // Extract syncMicrophoneState to avoid dependency issues
+  const { syncMicrophoneState } = microphoneHook;
 
   const isLegacySignalingEnabled = useRef(false);
 
@@ -655,6 +658,21 @@ export default function KvmIdRoute() {
   const rpcDataChannel = useRTCStore(state => state.rpcDataChannel);
   const { send } = useJsonRpc(onJsonRpcRequest);
 
+  // Handle audio device changes to sync microphone state
+  const handleAudioDeviceChanged = useCallback((data: { enabled: boolean; reason: string }) => {
+    console.log('[AudioDeviceChanged] Audio device changed:', data);
+    // Sync microphone state when audio device configuration changes
+    // This ensures the microphone state is properly synchronized after USB audio reconfiguration
+    if (syncMicrophoneState) {
+      setTimeout(() => {
+        syncMicrophoneState();
+      }, 500); // Small delay to ensure backend state is settled
+    }
+  }, [syncMicrophoneState]);
+
+  // Use audio events hook with device change handler
+  useAudioEvents(handleAudioDeviceChanged);
+
   useEffect(() => {
     if (rpcDataChannel?.readyState !== "open") return;
     send("getVideoState", {}, (resp: JsonRpcResponse) => {