In a sense, to make the sim more immersive, adding the option to change Radio, Effects, Engine noise, etc to be set through different audio devices. For instance, I like to feel the engine through my speaker set, but I also want to hear my radio but it's hard to hear when all you hear is BRRRRRRRRRT when you're "busy". The idea is basically give audio streams through different devices. Realtek can handle multiple devices being streamed once, for example I have a 5 speaker set up, two in the back, sub in front, and two standing desktop ones. I could employ engine noise in the rear speakers, RWR and radio in my headset, weapons/effects in my desktop speakers. I'm sure this was probably mentioned before, so if my epiphany isn't much to add I'll delete the thread.