diff --git a/gumble/gumble/handlers.go b/gumble/gumble/handlers.go
index a0278da..be02013 100644
--- a/gumble/gumble/handlers.go
+++ b/gumble/gumble/handlers.go
@@ -113,13 +113,30 @@ func (c *Client) handleUDPTunnel(buffer []byte) error {
 	}
 
 	// Sequence
-	// TODO: use in jitter buffer
-	_, n = varint.Decode(buffer)
+	seq, n := varint.Decode(buffer)
 	if n <= 0 {
 		return errInvalidProtobuf
 	}
 	buffer = buffer[n:]
 
+	// Detect sequence gaps (packet loss) and reset the decoder to prevent
+	// permanent audio corruption from state desync.
+	// Mumble uses a monotonically increasing sequence that wraps at MaxInt32.
+	if user.audioSequenceValid {
+		// Only treat as discontinuity if the gap is small enough to be loss
+		// rather than a legitimate wrap-around or restart.
+		gap := seq - user.audioSequence
+		if gap > 1 && gap < 100 {
+			decoder.Reset()
+		} else if gap < 0 && gap > -100 {
+			// Reordered packet — reset to be safe, since the decoder
+			// state depends on correct frame ordering.
+			decoder.Reset()
+		}
+	}
+	user.audioSequence = seq
+	user.audioSequenceValid = true
+
 	// Length
 	length, n := varint.Decode(buffer)
 	if n <= 0 {
@@ -134,6 +151,8 @@ func (c *Client) handleUDPTunnel(buffer []byte) error {
 
 	pcm, err := decoder.Decode(buffer[:audioLength], AudioMaximumFrameSize)
 	if err != nil {
+		// Decode failure indicates corrupted decoder state; reset and drop.
+		decoder.Reset()
 		return err
 	}
 
diff --git a/gumble/gumble/user.go b/gumble/gumble/user.go
index d23ffe2..ef9546c 100644
--- a/gumble/gumble/user.go
+++ b/gumble/gumble/user.go
@@ -53,6 +53,11 @@ type User struct {
 	client  *Client
 	decoder AudioDecoder
 
+	// audioSequence tracks the last UDP audio packet sequence number for
+	// this user, used to detect packet loss and reset the Opus decoder.
+	audioSequence      int64
+	audioSequenceValid bool
+
 	AudioSource *openal.Source
 	Boost       uint16
 	Volume      float32