The Xbox One doesn't have connections for analog sound. While some of you have fancy headsets that make love to your ear-holes through the wonderful sound they produce, us lowly folk must make due with what we have. I have an older headset from Turtle Beach. It isn't great but it's not too bad either. It has a distinct lack of digital-in. So, until I can afford one of those sweet ear-hole fornicating headsets, I went on Newegg and got myself a digital to analog converter for less than $20.
I can't complain about it. As much as I might like to. It does what it's supposed to do. Optical cable goes in one end, analog out on the other and viola. I have in-game sound. It's a cheap fix for those of us with other people in the house that may not want to be bothered by your noise.
TL,DR? Here's a video. (This is the first time I've ever talked on camera. As you can tell, not very comfortable with it yet. But, hey, that's a Dtoid shirt!)