Billy is a small mp3 program, which i now use as a replacement of windows media player
http://www.sheepfriends.com/?page=billy
it is simple to look at but it doesnt sacrifice any useability or functionality through its simplicity. its also very fast. It takes WMP about 5 mins to scan through 2086 songs which are in "my music" folder. Billy does this almost instangly. its a very nice little program and its small too. perfect for taking on a memory stick.
(sadly its only MP3)