Oh, man I hate that whole OverDrive system. It wouldn't be quite so bad if I could actually use it anywhere but on my laptop using their crappy software. That, plus I also have to wait 6 months for the title to be available to check out, and then it always becomes available at an inconvenient time, like when I have travel planned, etc. but I only have a short window where I'm allowed to have the media checked out.
Out of the 20 or so times I've tried using that system, roughly 3/4 of them I have ended up just finding the damn title somewhere else due to the inconvenience factor. There was one time where I was able to burn some overdrive audiobooks to CD to listen to in my car, which accounts for the other 1/4.