I am about to start my ATPL groundschool, and I will be driving for about an hour a day.
I punched ATPL Audio into Google, and there are loads of torrents to download. Some of them are labelled as "JAA ATPL Oxford Complete ATPL". I havn't downloaded any, so I'm not sure of the quality or legality of them, but it's an option.
I might have a go at recording some myself. Perhaps we could get a network going where we record one each and then swap?