For a limited time, you can get a free $5.00 credit towards any audiobook of your choice at Audible.com. You will need to sign in with your Amazon account to get the free credit.
Free $5.00 Audible.com Credit
The promotion is valid from 9am EST April 19, 2014 to 11:59pm EST on April 21, 2014 and the coupon is valid for a limited time only and expires on 11:59pm EST on April 30, 2014.