WMA Audiobooks on iPad

The other day I helped a patron learn how to download audiobooks on her iPad.  What I did not know was that WMA books can not be downloaded directly to the iPad.  After reading through Overdrive's FAQ's (very helpful), and emailing Nick, this is what I found out.  Patrons can check them out, but need to download the audiobook to Overdrive on their computer, then transfer the audiobook via the cord connection to the iPad.  If patrons want to download directly to the iPad, they need audiobooks in the MP3 format.