iFree will remove the DRM from your iTunes with no quality loss. It's in beta, but if you have iTunes installed on XP or 2000 you can give it a whirl for free. The download is only 213k.
Why use iFree?
Songs you purchase from iTunes Music Store are protected using your authorization information. Apple is using AAC files that include digital rights management (DRM) technology and any copy of iTunes (or any other appropriately QuickTime 6.2.2-savvy software) must know your authorization information to play the song. This DRM information enables Apple to implement many restrictions on how you can use songs you download.
1. First, you can authorize only five Macs and PCs at a time to play a song.
2. Second, you cannot convert your music from protected AAC to MP3, Ogg or your other favorite audio file format even the computer has already been authorized.
3. Third, when you use iTunes 4's Rendezvous sharing capabilities to share purchased music, the computers with which you're sharing must be authorized to play your purchased tracks.
4. Fourth and finally, the use of AAC and digital rights management limits you to playing purchased music in iTunes 4 on a Mac or PC and iPod.
Use iFree, you can remove all of the restrictions with no sound quality loss!