I'm really just not sure what you're trying, or hoping to accomplish here.
Surround sound should be setup based upon industry standards for speaker placement, and then levels should be set using the calibration mic that comes with the system, or by using a basic sound meter and tape measure. You can play with it and tweak it some, but you really want a pretty flat response from the speakers if possible and you want their distances and levels accurate so you get the intended audio properly from your main listening position.
There is no 'software' that changes how the Denon receiver behaves beyond the functionality already built into the Denon. I expect, whatever Gene used, it may have been software related to a specific setup that he was using at the time, or a specific piece of audio gear.