diff --git a/gumble/gumble/client.go b/gumble/gumble/client.go
index a80507f..7b05c1a 100644
--- a/gumble/gumble/client.go
+++ b/gumble/gumble/client.go
@@ -263,11 +263,15 @@ func (c *Client) AudioOutgoing() chan<- AudioBuffer {
 	ch := make(chan AudioBuffer)
 	go func() {
 		var seq int64
+		frameStep := int64(c.Config.AudioFrameSize() / AudioDefaultFrameSize)
+		if frameStep < 1 {
+			frameStep = 1
+		}
 		previous := <-ch
 		for p := range ch {
 			previous.writeAudio(c, seq, false)
 			previous = p
-			seq = (seq + 1) % math.MaxInt32
+			seq = (seq + frameStep) % math.MaxInt32
 		}
 		if previous != nil {
 			previous.writeAudio(c, seq, true)
diff --git a/main.go b/main.go
index 734bba5..57381e2 100644
--- a/main.go
+++ b/main.go
@@ -115,6 +115,7 @@ func main() {
 	serverSet := false
 	usernameSet := false
 	buffers := flag.Int("buffers", 16, "number of audio buffers to use")
+	audioInterval := flag.Int("audio-interval", 10, "outgoing audio packet duration in ms (10, 20, 40, or 60)")
 	jitterBuffer := flag.Int("jitter-buffer", 40, "incoming per-user audio buffer in ms (0, 20, 40, or 60)")
 	profile := flag.Bool("profile", false, "add http server to serve profiles")
 	noiseSuppressionEnabled := flag.Bool("noise-suppression", false, "enable noise suppression for microphone input")
@@ -123,6 +124,10 @@ func main() {
 	logFile := flag.String("logfile", "", "write logs to this file (logging is disabled when omitted)")
 
 	flag.Parse()
+	selectedAudioInterval, err := audioIntervalDuration(*audioInterval)
+	if err != nil {
+		handle_raw_error(err)
+	}
 	selectedJitterBuffer, err := jitterBufferDuration(*jitterBuffer)
 	if err != nil {
 		handle_raw_error(err)
@@ -219,6 +224,7 @@ func main() {
 		NoiseSuppressor: noise.NewSuppressor(),
 	}
 	b.Config.Buffers = *buffers
+	b.Config.AudioInterval = selectedAudioInterval
 	b.Config.DisableUDP = *tcpOnly
 	b.Config.IncomingAudioBuffer = selectedJitterBuffer
 
@@ -260,6 +266,18 @@ func main() {
 	handle_error(&b)
 }
 
+// audioIntervalDuration converts the packet duration requested at startup to
+// one of the Opus durations supported by Mumble.
+func audioIntervalDuration(milliseconds int) (time.Duration, error) {
+	interval := time.Duration(milliseconds) * time.Millisecond
+	switch interval {
+	case 10 * time.Millisecond, 20 * time.Millisecond, 40 * time.Millisecond, 60 * time.Millisecond:
+		return interval, nil
+	default:
+		return 0, fmt.Errorf("audio interval must be 10, 20, 40, or 60 ms, got %d", milliseconds)
+	}
+}
+
 // jitterBufferDuration converts the requested incoming playout delay to a
 // supported duration. Zero starts playback without an initial safety buffer.
 func jitterBufferDuration(milliseconds int) (time.Duration, error) {