Take $20 worth of coins to your nearest participating Coinstar machine and trade them in for an Amazon.com gift card. You’ll be rewarded with a free $5 Amazon MP3 credit printed on your receipt.
There is no fee to turn your coins into a gift card, so if you’re planning to shop at Amazon, you may as well score some free music, too! This offer is available through September 23, 2012. You have until October 31, 2012 to use your free $5 Amazon MP3 credit.