Free Downloadable e-Audiobooks and e-Books
Internet Archive: Audio Archive — www.archive.org/details/audio
You can find a wide variety of audio programs here including books, music, and old time radio shows.
LibriVox — librivox.org
LibriVox has public domain works that have been read and recorded by volunteers.
Podiobooks — www.podiobooks.com
Podiobooks has more recent books, but by mostly unknown authors. This site also lets you set up a subscription for receiving books on a schedule of your choice.
Pseudopod — pseudopod.org
Pseudopod has short horror fiction. Be sure to read the "Welcome to Pseudopod" post, but to paraphrase, this site is NOT for children.
Escape Pod — escapepod.org
Escape Pod has short science fiction.
PodCastle — podcastle.org
PodCastle has short fantasy fiction.
Clonepod — clonepod.org
Clonepod has short science fiction stories with ratings from G to PG13.
Open Library — openlibrary.org
This site includes 20 milion user-contributed items and over 1 million e-books in multiple editions and formats. Its goal is "one web page for every book ever published."
Project Gutenberg — www.gutenberg.org
This is the largest collection of free ebooks, including some audiobooks.
Baen Free Library — www.baen.com/library/defaultTitles.htm
Baen Publishing, a science fiction and fantasy publisher, has released some of their books as free ebooks.
Planet eBook — www.planetebook.com
Planet eBook has classic literature.
International Children's Digital Library — www.childrenslibrary.org
These have to be read online, they are not downloadable. They have a large selection of children's books in many languages.