I have to start by saying I have never listened to an audio book in my life, but here lately, with schedules, etc, I am struggling to find time to sit down and read, so I thought I may want to give them a try.

With that, I realize they are large files. Does the Nook handle these types of files ok?

Is there a particular format that it takes better than others?

Also, for those that do have audios for their Nook readers, is it better to buy a memory card and keep them on that vs. hardcopied on the reader itself?

The take up a lot of space Compaired to eBooks.  So I would advise using Micro SD Card.  Also Nooks Only do MP3 format Not WMA Library format.