I got a pre-oredered Guitar Hero 5 game from GameStop and at night, I put in the Code at www.gamestop.com/guitarhero5 in the "2 Free Songs" and 2 codes showed up. I wrote both codes down on paper and closed out and then go onto my Xbox 360 and redeem the codes from the code I put in earlier and the codes didn't work (because of mistakes writing in and/or not understandable characters I wrote). But now, I can't put in the original code to view those codes again because they can only be used once (on GameSpot).

Can anyone help me or give me any advice so I can get free songs AND/OR tell me what those "Free Songs" are?