If I may suggest an easier alternative, I would try Format Factory (there are also several others that work as well)
- Insert the DVD
- Start Format Factory
- Select on the left side "Audio"
- Select "All to WAV"
- Set up the location of the output folder under "Browse"
- Select "Add File"
- Open the VOB file you want the audio from, and click "OK"
- Cleck the green arrow for "GO"
The audio will then be ripped to the output folder you selected.
You may wish to edit this output as it will be one track...a good editor is Audacity. Or if you want it as an MP3 there are several suitable convertors. Burrrn is great for burning to CD.
As for copy protection...I know ripping the audio works in some cases without problems, but maybe some wonÂ´t work. YouÂ´ll have to try yours and see what happens. If it doesnÂ´t work then try AnyDvd (click for a free trial) which can deal with 99.9% of protections.