At any rate, as long as Spotlight is not able to find your VIDEO_TS 
folder(s), Remote Buddy won't be able to find them using Spotlight, 
either.

You can circumvent problems that Spotlight is having by telling Remote 
Buddy to manually search through specific folders (Preferences > Movie 
Library), but I'm not sure whether this will also work for physical 
DVDs, as those change their path in the OS X filesystem depending on 
their name. As Remote Buddy is using smart OS X aliases instead of 
static path names, it might still work, but it's nothing that I've 
tested myself thus far.

Best regards, 
Felix