Ok, here is what i'm trying to do:

I have a DTS audio file but spruceup does not support DTS. So, what I did was go ahead and import just the video into spruce up and then wrote the title set.

Now, is it possible to take the old VOB file with the correct audio attached and somehow overwrite the files in the title set created by spruceup? The original VOB file does not have ifo files, so I thought I could use ifoedit to create some and then make the swap.

Any help here on how to get this to work?