Amazon has a new promotion out where you can snag a free $1 credit at their MP3 Store. The way the deal works is that you will receive the free $1 credit after purchasing a qualifying Kindle music book through Amazon’s Kindle Store. Fortunately, you don’t need to pay a cent because there’s a free Kindle book that qualifies for the credit. All you need to do is “purchase” the free book, and then wait for the $1 MP3 credit to be automatically applied to your account after the purchase has been completed. This deal expires April 22nd. The promotion is limited to one credit per customer.
As a reminder, you don’t need to own a Kindle to read Kindle books. There are free Kindle Store apps that allow users to read Kindle Books on PC, Mac, and various mobile devices.

