i don't know if your willing to spend $24.99 but there is a program called FixTunes. I believe that it is for Mac and PC, i bought it a while ago and it inputs the right name, artist, album, album art, etc into all your songs. It gets them right about 95% of the time witch is pretty good. For example if you had a song from lime wire that was like rite_round_flo_rida it would change it to Right Round Flo Rida Right Round - Single. Check it out at FixTunes - Fix Your MP3 Tags and Names, Add Album Art and Remove Duplicates