Originally Posted by jj2me
Agree. Just to be clear, you need support for protected WMA (like the Clip+ supports) for most library audiobooks, not just unsecured WMA support.
The Clip+ is a particularly good recommendation, as it's so small. You must ensure that library audiobooks get loaded in the Clip+'s "Audiobooks" folder in order to get the resume function.
Thanks for the clarifications.
If anyone's interested, the Clip+ 4GB will be a Black Friday item at Best Buy and RadioShack for $30 ($20 below retail).