Razer Kraken X USB 7.1 Surround sound not recognized

Hi ive stumbled over an issue with my Razer Kraken, I bought these yesterday and ive downloaded the 7.1 program from Razer only to get it coming up with a warning tick. that lets me know i have to choose which output i want 7.1 to work on. This is where things go wrong, i can't seem to have 7.1 as an audio source. Ive checked sounds and went under advanced etc but i can only select Windows spatial sound nothing else. do anyone have any idea to what i can do to fix this?