Ok, Joe got me thinking about this iTunes thing. I don't know if he gave this away because he doesn't have iTunes or doesn't use iTunes.
I actually use iTunes, but I don't use the music store at all. I know this game code is from specially marked Pepsi products that have codes under the cap for 1 free song. A little background - iTunes uses locked ACC (.mp4) files (FairPlay) for the songs that you download to your PC. What if you like Winamp though? You too can listen to your free iTunes songs. I was surfing my favorite iPod website today and noticed there was a program for Mac/Linux that could convert these .mp4 files to something that would play in any other player. I also found a plugin on the Winamp website that lets you play these .mp4 files in Winamp 2 or 5. The only catch is that you must have iTunes installed.
Winamp Plugin
/me loves his 
and 