The new DVD sounds spiffy in both stereo and surround. I no longer have the old one, but I do remember ripping it in both 2.0 and 5.1 to see why it sounded so odd. The left stereo channel was considerably quieter than the right, as were the left front and rear.
This was uploaded to Youtube by someone other than me, and you'll notice that one side is louder than the other.