I don't use a program for that, just good house keeping. My Mp3's are in directories like /mp3/artist/album/tracks (/mp3/KMFDM/XTORT/01 - Light.mp3). It's pretty nice that way, easy to keep track of and if I want to listen to an album, all I have to do it right click the directory and click "play in winamp" or do the same on the artists directory and listen to everything I have by that artist.

ScoCo