Here is the collection of Audio book resource links.

Audible.com
Audible.com is the leading provider of downloadable audio, offering a vast selection of audiobooks, newspapers, magazines and radio shows.

Audio Book Webring
A webring of audio book websites.

Audio Publishers Association (APA)
The Audio Publishers Association (APA) is a not-for-profit trade association whose primary goals are to promote awareness of the audiobook industry and represent audio book publishers.

AudioBookClub.com
An audiobook membership club. In 1998 Audio Book Club acquired Doubleday’s Audiobooks Direct and Columbia House’s Audiobook Club.

AudioFile Magazine
AudioFile provides reviews of audio books, audio book news and other related features.

Ebay Audio Books
eBay has a large collection of pre-owned and new audiobooks for sale.

Free Audiobooks Resources
An article about how to find free audiobooks online.