As an Amazon Prime member, you have access to a nice selection of audio books. In most cases you need to download the ebook before you can get the audiobook; you can’t just see a separate list of available audiobooks and download them individually.
AudioBookTreasury offers about 50 audio books for free download in MP3 (or complete work in Zip) or for listening online. Many are available elsewhere, but they do have a nice collection of Sherlock Holmes books and a nice collection of Edgar Allan Poe’s writings.
American Radio Theater Modern production using old time radio techniques for stories broadcast in podcasts. All are available for free download in MP3 or free listening online. This site is still active.
FreeAudioReview offers a personal review and links to over 206 free audio books.
Baseline Of Health has 16 free lectures on health related topics available for free download in MP3 without registration.
Biography In Sound the Internet Archive offers the old time radio broadcast of Biography In Sound, for free listening online or free download in MP3, without registration. Also available as a torrent download. There are 79 one hour episodes.
Book at Bedtime BBC Radio 4 presents audiobooks in episode form for free listening online without registration. These are time-limited so you have to keep up to complete a novel.
Classicly has a good sized collection of free classic audiobooks separated into various categories. All are available for free download in MP3, without registration.
Classic Literature Podcast a collection of classic literature audiobooks released in podcasts. All available for free download in MP3.
FreeClassicAudioBooks has around 60 classic works available for download in MP3 (32kbps) or iPod friendly m4b (32kbps). They are pretty much split between human read and computer.
FreeListens is a blog that culls the web for free audio books. Not all blog entries are about the free audio books, but most are and there is a large amount of content available through here.
Goodreads has a collection of 55 free science fiction audiobooks. The links are offsite, so download and listening options vary. The link to the audiobook is on the book page, select “more details”.
Greatest AudioBooks posts their audiobooks at YouTube and has over 200 free audiobooks available for free listening online.
Huffduffer around 500 free short audio stories released in podcast, most in the science ficiton and horror genres. All are available for free listening online or free download in MP3.
Kara’s Free Audiobooks over 200 free podcasts of readings of classic books and poems. All suitable for children and all available for free listening online without registration.
LitToGo is a project of the Florida Educational Technology clearing house that offers a very large collection of interesting audio books and poems. All are available for download in very good quality MP3.
LoudLit offers a small collection of free audio books, but with some unusual entries. They are available for online listening (and reading) or download in MP3. All are human read.
Miette’sBedtimeStoryPodcast offers a unique collection of mostly short story MP3 audio works. These are selections that you will not find elsewhere and it appears to be a good size collection.
ODP has a listing of “100 Free Audio Books You Should Have Read”. The title is a bit strange since these are audio books and the links are off site to sites listed here-but it is still a good collection of classic works nicely put together in one place.
PDGene PDGene has put together an excellent collection of links to online audiobooks and short stories.
Poetry Archive A huge collection of poetry readings, accompanied by the written version. There are several “guides” to acquaint you with the offerings.
PublicDomaineBlog has links to hundreds of popular classic works available for free listening online.
The Classic Tales Podcast classic novels in unabridged audio podcasts. All are available for free download in MP3 without registration.
ThoughtAudio offers around 70 audio books for free download in good quality MP3 format. Many are not available elsewhere and this is an interesting collection.
YouTube has a huge offering of audiobooks, but it is a bit of a pain to find them. the main link here is just a search for “audiobooks” and contains some non-book entries but is a thorough display of their entries.
LibriVox has a huge collection of audiobooks recorded by volunteers available for download in MP3 or ogg vorbis.
Librophile provides a clean, simple interface for browsing audiobooks available from LibriVox.
Lit2Go is a free online collection of stories and poems in Mp3 from Florida’s Educational Technology Clearinghouse . You can browse authors, genres, collections and readability.
LoudLit.orghas a small collection of free public domain audiobooks available for online listening or download in MP3.
The Online Library of Liberty offers a collection of computer-generated audiobooks on topics related to individual liberty. They can be listened to online or downloaded in MP3.
Open Culture has a large list of free audiobooks available for download either directly from the site or from other sites.
OverDriveis a download service which libraries can use to make audiobooks and other digital content available for browsing, checking out and downloading. More than 13,000 libraries worldwide offer audio books via OverDrive. Audiobooks are available in MP3 or digitally-protected WMA format.
PodCastle is a fantasy audio magazine which offers weekly short stories for online listening or download in MP3.
Podiobooks offers serialized audiobooks distributed via RSS, much like a podcast. There are 500+ audiobooks available which are spread through a wide variety of genres including chick lit, fantasy, humor, magical realism and thrillers.
The Poetry Archive is an online collection of recordings of poets reading their work which you can listen to online for free.
Talking Historyhas a collection of audio documentaries, speeches, debates, oral histories, conference sessions, commentaries, archival audio sources, and other aural history resources. They also have weekly internet based radio broadcasting program which covers all aspects of history.
Thought Audio has a nice collection of professionally produced classic literature and philosophy titles. You can listen to them online or download them in segments in MP3 format.
World of Tales has stories for children, folktales, fairy tales and fables from around the world available for online listening.
I am an avid audiobook and podcast listener. Also, I have varied interests in everything from fiction to travel to history to current events, With long commutes in my city, I have a lot of time to listen to audiobooks.