I recently purchased the following two audio books(in CD format) for my long commute home:
1) The Four Pillars of Investing: Lessons for Building a Winning Portfolio
2) The Little Book of Common Sense Investing: The Only Way to Guarantee Your Fair Share of Stock Market Returns
I was also trying to purchase The Future for Investors: Why the Tried and the True Triumph Over the Bold and the New, but amazon was only selling it used. I am not opposed to buying books used, but I am not sure I want a used CD and the price was the same as what I expected to pay new.