are all books available for audio

Hi rwrigh1,

Welcome to the Support Communities!

The iBooks Store is for electronic versions of printed books.

To determine if a book is available as an audiobook, you would need to search for it in the iTunes Store.

The information below will show you how:

How to browse and buy content from the iTunes Store

http://support.apple.com/kb/HT1879

Here is a quick video tutorial of iTunes 11:

iTunes 11: Introducing the New iTunes

http://support.apple.com/kb/VI293?viewlocale=en_US

Cheers,

Judy