LXMusic 0.3.0, xmms2-devel trunk on Fedora 11. Played a song off of the playlist. While song was playing, removed contents of playlist. Added different folder to playlist. Double-clicked on song of new playlist to start playback. LXMusic crashed. Unfortunately, this has not been reproducable so far. The above process works fine now. Detailed bug report of crash attached.
Bug report
fixed in 0.4.2