All the links below are to free or subscription services on the web. These are not library subscriptions.
These sites offer the texts of books without charge. Most of the books are older texts, no longer under copyright, and much of the digitizing has been done by volunteers.
LibriVox volunteers record chapters of books in the public domain and release the audio files back onto the net. Our goal is to make all public domain books available as free audio books. MP3 files.
Many books are scanned and contributed by college and public libraries that want to make scarce volumes in their collections more available.
Audible
This site is a partner to Amazon and works on a subscription basis, $14.95 a month or $149.50 a year.