From Project Gutenberg: http://www.gutenberg.org/ the first producer of free electronic books (ebooks).
Public Domain Books: These books are in the public domain in the United States and everybody – including Project Gutenberg and you – may read and distribute them.
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AUDIOBOOKS.COM: http://www.audiobooks.com/ World’s largest selection of new & used audiobooks on compact disc or Industry Standard Mp3 files. These would be for purchase only.
AUDIBLE.COM: http://www.audible.com/ Also, a monthly fee.
LEARNOUTLOUD.com: http://www.learnoutloud.com/ is your one-stop destination for audio and video learning.
Browse over 10,000 educational audio books, MP3 downloads, podcasts, and videos. Need a membership with a monthly fee.
Free Christian Audio Books: http://www.freechristianaudiobooks.com/ MP3 files available on this website but very few titles.
Free Classic Audio Books: http://www.freeclassicaudiobooks.com/ MP3 files available on this website but very few titles. Also from this website you can go to:
Bibles in mp3 available for Free Download http://www.audiotreasure.com/#download/
CHRISTIAN CLASSICS ETHEREAL LIBRARY http://www.ccel.org/
The mission of the CCEL is to build up the church by making classic Christian writings available and promoting their use. You may want to register ($35), but you can also view many wonderful Christian classics in print online or plain text without registering.
The Study Guides and Strategies web site: http://www.studygs.net/