I think I understand what you posted, but failed at the first hurdle of trying to create the sound gauge. I only have FS Panel Studio and after 4 hours of trying had to give up!
I have put the sound file in the panel folder, as well as every other file imaginable, I also have DMs shared folders for use with his VC10 and 1-11 so if it is linked back to that it should find what it is looking for.
I have found a fix though. If you go into FS9.cfg file you can change the "See own aircraft" to 0. This way, when in the 2D panel you can asign the bmp views without having the VC in the background.