As I understand it, that software is designed to make in ears or closed headphones sound like speakers in a room. Adding back the left ear hearing right and right hearing left that is missing. The difference is complex, but is both amplitude and time domain tricks that exist with two speakers in a room with two ears. The software puts back in the missing elements. How well it does it I have no idea. I suppose if it does it well, then a properly treated and great sounding space with excellent monitors isnt needed? I wonder?