Were you able to download audiobooks through Adobe Digital Editions before? I am not aware of Adobe Digital Editions supporting audiobooks, unless you mean that the EPUB or PDF contains audio.
Thanks for the reply
No, I had not tried to download a audiobook previously. I guess I assumed digital editions would allow me to download audio books also.
This started when I acquired a older ipod [wide plug type] and wanted to download an audio book to digital editions-then to the ipod.