Current projects: WiiMP (Wii Music Player)
(Finished: alpha)tagreader for WiiMP - Reads metadata from ogg, flac, mp3 and mp4.
(Porting: Mostly works) SQLite for WiiMP. I'll release at some point - but not until I'm certain it wont trash your SD card :)
(Developing) wiimp_db - Uses tagreader to store file metadata in an sqlite database.