I know there is a tool named Xilisoft DVD audio ripper which can rip audio from DVD to save as mp3 or wav formats. Then you can creat a music CD through other software.
Have tried searching through the forum posts? There is a Ton of info on this particular topic. Here's a link to some of it. Skim this thread: http://forums.afterdawn.com/thread_view.cfm/155109
Run Xmpeg, once installed, open DVD and right click on video image. An option will be given to extract audio. You can select several output formats including MP3. Xmpeg is shareware, without fees or limitations. http://www.xmpeg.net/xmpeg.asp
go here - http://cgi.tripod.com/321ripforum/cgi-bin/YaBB.pl?board=othersoft;action=display;num=1110023611 free program, two dowmloads and a guide to follow written by me, works great and its easy to use