Welcome to the forums ShotGlockMF.
Lets see if I understand what you are doing first. Vob files are specialized files for containing mpeg2 video within a dvd-video. They won’t play properly in a standalone player by themselves, but also need the ifo and bup files within a Video_TS folder. You need the entire dvd-video structure.
If all you have are the vob files, you should be able to import them into Nero Vision and have it output as a complete dvd-video. I’m assuming you have the entire Nero burning suite. If Nero Vision doesn’t want to accept them, let me know…there are ways around that. You should be able to select the audio you want.
If you are starting with a complete dvd-video (with all the vob, bup and ifo files within a Video_TS folder) you can import it into Nero ReCode to select which audio and subtitle streams you want to include or exclude on the output.
All of this assumes that your video is not encrypted, since none of the Nero programs will work with commercial dvds that still have copy protection.