The "meta_changed()" function is unreliable in some situations
When changing local audio tracks, the "meta_changed()" function sometimes isn't called at all. This happens whether I click the >>| button or double-click on another playlist entry. I've ensured that the two tracks have different titles (at least).
In other cases, VLC just crashes when the local audio track changes. This happens before my "vlc.msg.info(...)" line at the top of "meta_changed()" is called. My guess is that all of this is caused by a memory leak somewhere in the VLC extension code.