Just posted the first public version of the RDTJ (roundeye's duct-tape jukebox) to sourceforge and freshmeat (it's BSD licensed). While I am vying for the title of "worst software acronym of all-time" I'm also pretty keen on the program itself.
It's a jukebox system (as the name would seem to imply) that allows you take your drive full o' mp3's (preferably sorted by artist and album since that's where the most duct-tape is), browse them through a web interface, and play them on your stereo system of choice. It queues the tracks up like a jukebox would. Great fun at parties, and really cool if you dangle it on the web and let your friends play your stereo for you.
It's at http://rdtj.sourceforge.net. Enjoy.