At Telltale Weekly they are having a special with some of their audiobooks available for free. I listened to Kelly Link’s story “Most of My Friends Are Two-Thirds Water” and really liked it. I’ve heard a lot about her work but haven’t read any myself. This story was good enough to make me seek some more out.
Spoken Alexandria (which seems to be a sister site to Telltale Weekly) has a podcast feed (XML here) of free audio books. I’ve blogged about this project before and I think it is fantastic – DRM-free, open audiobooks. They charge for them but the goal is that when any audiobook makes enough money to pay for itself, then it gets added to the free portion of their library. Even the ones that are for pay are a fraction of what you pay other places, so check it out.