If you have an Android device like the Kindle Fire, you can get a free $1 MP3 credit by downloading a free qualifying App from Amazon's Appstore. Go HERE for this offer. Most songs on Amazon are priced at either 99 cents or $1.29. In the App Store, there's a bunch of different free Apps to choose from, including Angry Birds Seasons. (Go HERE to get it.) Right after you download the free App, you'll get an e-mail notifying you that you have earned a free $1 MP3 credit.