I happened to have my Dr. G discs close to hand so I checked them out - sadly the sound is regular 2.0 surround (which makes sense considering the definitive edition didn't include an AC-3 track).
Here's the VOB in case its lower-generation picture proves useful (it's NTSC frame rate):
https://www.box.com/s/26jdeo6zpawweha9z1uc