Handhelds to play satellite radio, digital books

This was hinted at in a patent a while back thought now one knew what form it might take. It looks like Audible and XM are partnering on this one. I'm not sure I can afford (actually I know I can't afford) an Audible subscription on top of my XM subscription. As in all things the devil will be in the details. Now if the device and play ordinary MP3-WMA-Ogg files on top of it all, it would be great. Short of that and I'm skeptical about its success. Then again a lot of folks like audio books and I'm sure this has been run past more than a few focus groups.