I have a pretty large music library all contained within iTunes (50GB and growing). I have been collecting this music from various sources over the years and inevitably, despite my best efforts, the metadata and album art had gotten away from me. So I turned to the Googles and came up with an application / plugin called TuneUp.
TuneUp uses the GraceNote music database to analyze your music and identify the proper song including all the metadata (artist, title, track number, album, etc) and album art. It presents you with its findings and then allows you to either accept or reject what it has found. If you accept it will retag your MP3s to include the proper data. No more unknown name, unknown artist crap.
I have run my entire MP3 collection through TuneUp and it worked nearly flawlessly. There were a couple really rare, underground tracks that it didn’t properly identify, but there were WAY more that it did (including other rare, underground tracks).
I’ve signed up to be a TuneUp referrer… if you decide to purchase a copy then why not do it through my referral link – http://tuneup.tellapal.com/a/clk/4PYZt. Each referral nets me $10 credit to a gift card or my PayPal account. Clean up your dirty music collection and help fund mine while you’re at it