Audible.com, Amazon’s audio-book company, is offering two free audio books if you sign up for a 1-month trial of their service. (I’d tell you how much it costs after that, but I didn’t bother to find out. I always cancel before the trail period runs out.) It looks like they’ve got a really good selection. So, if you have any kind of commute (like I do), this could be a good opportunity to pick up some new books for the road.