There are a couple of programs out there that can help you organize your iTunes music, especially those designated "Track 01" where you don't know what song it is until you play it.
John Sanders from WBAL in Baltimore recommends TuneUpMedia.com which will read the digital fingerprinting on each song to identify the name of the song, the artist, and will even put the album artwork on your computer while it's playing. It's free up to the first 500 songs and then it's $12 a year after that for unlimited use. Sanders says that MusicBrainz is free but leaves a bit to be desired as it doesn't organize every song.
Sanders also recommends Last.fm, which is kind of like social networking for music lovers. It updates your profile with the songs you're listening to, as well as making it available for your friends to see.
To learn more from John Sanders' Web Trends, click the title above to see his article and video about organizing iTunes music.
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