I was talking to someone today about their experiences about buying DRM audio books, and how in the end they gave up. Between grief with paying and downloading, installing a separate piece of extra software to play the books, and then finding on the bus that the software then wanted to authenticate via the net before things would play (and that wasn’t an option), he’d basically lost any faith that it was worth it. Too hard and too painful.
The cartoons in this post sum that experience up quite well. See TidBITS Tech News: A Pair of Cartoons Reveals DRM Frustrations.