Kindle
Unabridgedbooks.com sells DRM-free MP3 readings from public domain books, stories and essays (see Telltale Weekly for a similar service) -- these are audiobooks that you can truly own, without locking yourself in to one vendor's players.
Link
Update: Here's DRM-free audiobooks in French and more DRM-free audiobooks in English
I write books. My latest is a YA science fiction novel called Homeland (it's the sequel to Little Brother). More books: Rapture of the Nerds (a novel, with Charlie Stross); With a Little Help (short stories); and The Great Big Beautiful Tomorrow (novella and nonfic). I speak all over the place and I tweet and tumble, too.