Update src/containers/sound-editor.jsx

src/containers/sound-editor.jsx

@@ -773,17 +773,17 @@ SoundEditor.propTypes = {
 const mapStateToProps = (state, { soundIndex }) => {
     const sprite = state.scratchGui.vm.editingTarget.sprite;
     // Make sure the sound index doesn't go out of range.
-    const index = soundIndex < sprite.sounds.length ? soundIndex : sprite.sounds.length - 1;
-    const sound = state.scratchGui.vm.editingTarget.sprite.sounds[index];
+    const index = Math.min(sprite.sounds.length - 1, Math.max(0, soundIndex));
+    const sound = sprite.sounds[index] ?? {};
     const audioBuffer = state.scratchGui.vm.getSoundBuffer(index);
     return {
-        isStereo: audioBuffer.numberOfChannels !== 1,
+        isStereo: audioBuffer?.numberOfChannels !== 1,
         duration: sound.sampleCount / sound.rate,
         size: sound.asset ? sound.asset.data.byteLength : 0,
         soundId: sound.soundId,
         dataFormat: sound.dataFormat,
-        sampleRate: audioBuffer.sampleRate,
-        samples: audioBuffer.getChannelData(0),
+        sampleRate: audioBuffer?.sampleRate ?? 3000,
+        samples: audioBuffer ? audioBuffer.getChannelData(0) : new Float32Array(1),
         isFullScreen: state.scratchGui.mode.isFullScreen,
         name: sound.name,
         vm: state.scratchGui.vm,