[Thulani]

If the DVD has chapters, you can extract the needed chapters using VOB Blanker. Then, using DGIndex, you can extract the songs.
If not, extract the audio using DGIndex, open the audio file in Audacity and cut/join the needed parts. (Audacity does not support for ac3 or mp2, but you can convert the audio file from those 2 formats into WAV with Belight & BeSweet)

I don't have VirtualDub in my PC, but using VirtualDubMod, you can extract the audio like this:
- select the needed parts with the two half arrows (last two buttons, from the left part, bottom of the screen)
- then go to Streams -> Stream list -> Save WAV

Sorry if you don't understand something.