Guitar Hero Soundtrack

Someone's put together an iMix containing all the Guitar Hero songs (except for the Joan Jett offering, which isn't available on iTunes), in case you need to pick up any tracks to familiarize yourself with.

Note, though, that there are subtle differences between the original songs and the Guitar Hero versions. If you want to familiarize yourself with the Guitar Hero versions, you can listen to them for free on the Guitar Hero web site.