diff --git a/lib/hooks/useMultiTrack.ts b/lib/hooks/useMultiTrack.ts
index 8b11e0c..d6a82ee 100644
--- a/lib/hooks/useMultiTrack.ts
+++ b/lib/hooks/useMultiTrack.ts
@@ -33,7 +33,20 @@ export function useMultiTrack() {
     if (typeof window === 'undefined') return;
 
     try {
-      const trackData = tracks.map(({ audioBuffer, ...track }) => track);
+      // Only save serializable fields, excluding audioBuffer and any DOM references
+      const trackData = tracks.map((track) => ({
+        id: track.id,
+        name: String(track.name || 'Untitled Track'),
+        color: track.color,
+        height: track.height,
+        volume: track.volume,
+        pan: track.pan,
+        mute: track.mute,
+        solo: track.solo,
+        recordEnabled: track.recordEnabled,
+        collapsed: track.collapsed,
+        selected: track.selected,
+      }));
       localStorage.setItem(STORAGE_KEY, JSON.stringify(trackData));
     } catch (error) {
       console.error('Failed to save tracks to localStorage:', error);