I love music, and I have already used this great credit! Right now you can snag a free $2 MP3 Credit to Amazon. This has been extended from the earlier offer (so if you missed it this is your chance). Just apply code HEARTMP3 to your amazon account and you are good to download!
There are also some hot music deals right now, like these $0.25 summer hits! I would spend the credit in the Amazon MP3 store as soon as it is redeemed,because I am not sure when it will expire! ENJOY!