Kindle
Tim Berners-Lee, inventor of the Web, gave a stirring speech at the Oxford Internet Institute that makes subjects related to Internet freedom accessible to non-geeks and geeks alike. The audio is available as an MP3.
Link
Coral Cache Link to 70MB MP3
(Thanks, Rich!)
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.