{from http://techpp.com/2013/07/18/free-audiobooks/}
Click on the Link to visit:
Librivox: https://librivox.org
Loyal Books: http://www.loyalbooks.com/
Free Classic Audio Books: http://www.freeclassicaudiobooks.com/
Open Culture: 900 Free Audio Books: http://www.openculture.com/freeaudiobooks
Digital Book.io: http://www.digitalbook.io/browse-audiobooks-ebooks.html
Learn Outloud: https://www.learnoutloud.com/Free-Audiobooks
Archive.org actually pulls free audio books from some of the sites listed above, all into one place for easier browsing. https://archive.org/details/audio_bookspoetry
This one offers three "free trial" options, then you need to pay:
Audiobooks.net http://www.audiobooks.net/learn_more