Audible has reached an exclusive deal with Apple under which it will continue to offer its spoken word books and shows exclusively through iTunes until September 2010.

The company already offers over 105,000 hours of downloadable audiobooks and other spoken word transmissions through the service.

Audible will also continue to supply iTunes with an ongoing flow of other programming from its collection.

"We're thrilled to offer iTunes customers access to Audible's astounding catalogue of spoken word content," said Eddy Cue, Apple's vice president of iTunes. "Audible's audiobooks have been extremely popular with iTunes customers and consistent best sellers."

"We are very happy to know that we will continue to work closely with iTunes," said Donald Katz, chairman and CEO, Audible. "Working with iTunes has been a tremendous benefit to our listeners, and we expect things to be even better as the digital media economy continues to grow."

Author Thomas Friedman's audiobook from Audible, The World Is Flat, hit the number one spot on iTunes US, and many other audiobooks have been iTunes best sellers.

Audible first began distributing digital audio content on iTunes in October of 2003.