If you are like me then your iTunes library is huge. In that library there is a bunch of stuff that i don't even know what and where they came from. It may be from a ripped CD or a download. Also a lot of my music because of that does not have any cover art. Well check out this app called tuneUp. The app is very simple and it will fix messed up track titles, locate missing cover at and even remove duplicate items.
Check it out and clean up your music!