file dupe filter

hey, I was wondering if there are any good utils for finding duplicate files on a drive or partition. You see, I have a fair sized mp3 collection (around 15-20GB) and managing it gets a little unwieldy at times. As such, I tried a few organizational tools like Ex Falso for GNOME, and found that it duplicated a good deal of the songs on the partition holding my music...So I know have an unknown number of duplicate files wasting space on this drive, almost filling it to the brim.