PC sound is one of the most annoying things I deal with, my rigs main job is playing movies first and gaming follows, for movies its awesome, hooked to a 65" tv and pumping audio through a 5.1 onkyo is epic.
BUT, the Kodi program handles the video and audio, it simplifies it and makes sure I'm getting that sweet sweet dolby or dts hd goodness.
games on the other hand are infuriating, for some silly af reason the gaming industry is addicted to cranking sound through headphones?! my audio sounds "fine" but a playstation or xbox beats this expensive pc because they can crank high def audio to a receiver easy as pie, just go into settings, check 1 or 2 boxes, boom, surround sound.
pc can and cant do that, at least not easily and after spending 10hrs googling through arguments on htpc forums. if microsoft just moved over whatever xbox is using for audio into windows I'd give them all the money, but for some reason sound just doesnt matter to them.