Ok, just found another problem while playing around with smart playlists.
If I try to open the web interface of mt-daapd while I have songs.db opened in sqlite, the daemon crashes. In fact, that seems to crash the whole db, couldn’t get it to start agaiun afterwards, crashes with the same phaenomenon as described above. You really should get editing available in the cvs – it can’t be too difficult to allow an UPDATE in addition to the INSERT INTO 😉