Amazon Local App has a free $2.00 MP3 credit. Just download the app and claim it. If you are already a Amazon member then all your information will be there. Download the app and it will ask you to sign in with your Amazon account. You will need a credit card for this but they will not charge your card.
How to Get Your Free Credit
•Open the Amazon Local app on your iPhone, Android, or Kindle Fire
•Sign in to your Amazon.com account under Settings
•Claim the free Amazon MP3 voucher in the “Today’s Deals” tab by March 25, 2013
•Follow the redemption instructions and enjoy!
•Limit one per customer