I love listening to audio books. I usually don't have much spare time, so I simply play an audiobook while working. Since some of the books I want to have read don't have an audio book version, I decided to have my own audio book version for personal purposes. :)
I just read the book and record my voice through NeroWavEditor, save it as a WAV file, then convert it to MP3 using a free WAV to MP3 converter tool.
This way, I'll be able to read the book once, and I can just replay it later for review purposes. Right now I'm working on SEO Fast Start 2007 by Dan Thies. It's a really good book that covers the processes of SEO, and even better, it's FREE! You can download it at their website, www.seofaststart.com. This book teaches you how to increase the number of visitors to your site by giving your site or blog more visibility on search engines.
(Note, the audiobooks I record are for personal purposes only, I do not sell them or distribute them if it infringes on patent and copyright laws)