@plainoldme,
POM, I have listened to hundreds of audio books, mostly from the pub lib or from iTunes to my iPod. Apart from a few forays into passing NPR stations while I'm doing one of my frequent eight-hour drives, I listen to audiobooks. I've "read" history, biography, fiction and non-fiction, classics, you-name-it. I have poetry collections on CD that I keep in my car.
Also, I listen to books when I do long walks on a local path...not when I'm on an adventure walk or mountain trek, of course.