Sorry Irock, it's occurred to me that I've been rather vague in the opening post. By cleaning up, I mean like, getting all of the track names correct, getting all the album names correct, getting all of the artists correct, and getting all of the album artwork.
A lot of this stuff is downloaded, so there's no real universal system of numbering or track labeling, and I could never be bothered to input the proper titles myself when I first got them. So now I have a huge mass of tracks that have bizarre or incorrect labels.
Also, iTunes itself has messed up some of these as well. Even when I stick a legitimate CD in, they still make mistakes.
Also, @Anski: Nice to see you too. Maybe I'm quoting the wrong person, but I'm fairly certain it was you who once said, "People still buy things?" in an older topic.