Audible has managed to make it impossible to download audio books to your desktop. All the Download links in your library have been replaced with a link to the
How To Listen page!
I'm hoping this is just some stupidness at Audible, and it will get fixed, but I haven't had a chance to go through the pain of Customer Service to deal with it. However, if it's intentional, this is a serious attack on our ability to have DRM-Free audio books.