which audio file to which vob file???

[CoWbOyPoEt]

I just bought a dvd with the complete series of Buffy, I want to make a back up as a SVCD. HOw can I choose which .vob file to put with the correct audio file? There are numerous shows on each of the 7 dvd disks..
Any suggestions???
Thanx in advance..
Im using DVD2SVCD along with TMPGEnc...