This is a source of free audiobooks
English language:
Subscribe to newsletter from http://www.learnoutloud.com and they offer about one book for free per week.
http://librivox.org: community donated and copyright expired audio books
Marathi language:
http://boltipustake.blogspot.in/2011/01/blog-post.html : collection of community recorded audio books.
"राज्य मराठी विकास संस्था" :http://rmvs.maharashtra.gov.in/
Blog posts having more information:
http://www.digitaltrends.com/lifestyle/best-websites-for-free-audiobooks/
