Check out the below link to DVD Audio Ripper. As its name suggests, it's a program that allows you to rip the audio files from DVDs. I've used it on several DVDs for which there weren't CD soundtracks available. It's a little cumbersome to use but works quite well once you get the hang of it.
http://www.gold-software.com/download1840.html
Neat, but I still don't have a DVD player on my computer yet, but I saved the link for when that time comes.