I use iTunes and have attempted to organize my music folder. I have dozens of duplicates, from various computer backups and imports, and want to cut the fat as far as my duplicates of duplicates. I've also got many songs in my library that simply don't exist, or are linked to nothing. Some are mistitled/labeled as well. It's pretty much a mess.

I seem to remember a program called "Tune Up" that did this "automagically", but I don't know of its recent reception or actual effectiveness. Would it be a wise investment to get Tune Up?