AudioVoiceCentral

Voice

Archive.org (cylinder-Edison from old, any & all they can find)
Gutenberg Audio Books (many read by computerized voices)
Libravox.org (books, poetry)
LvMI (economics, history, lectures, audio books)
www.audiobooksforfree.com (alphasort of free audio books)
free-audio-book-and-podcast-resources (lists and reviews sources of audio books)