From Authorems.com: "Audible hopes to encourage authors to directly market their audio books by offering an honorarium of $1 per audio book sold payable directly to the author.
This is for any of your books in the Audible catalog—self-published or commercially published—and is in addition to your regular royalties.
Obviously, the more audio books you sell, the more money you can earn, so expect to see more audio books mentioned via social media and in blogs.
The program, called Audible Author Services, has set aside $20 million to pay to authors between now and December 31, 2012."
Read the full article: http://www.authorems.com/2012/audible-pays-mrkt-book/