Sorting MP3s

I've spent most of the evening sorting through my mp3s with a program called Music Brainz. It works by taking fingerprints of each of your mp3s, and then comparing that information against it's database. It can figure out what songs you have, even if the filenames or ID3 tags are wrong or missing. It's also great for normalizing the names of your mp3s so they show up properly in your iPod (You no longer have 3 different spellings for 2pac).