The thing is I want them to both be working at the same time so I can talk on skype and listen to music on the PC, and hear the game sound at the same time for example.
Older Astro Mixamp's had an input source, where you could use that to input your game sound from your console, and then use USB to PC for skype/music, and then be able to balance voice and game/music with the balance knob.
It's probably more expensive then that thing you linked, but it's definitely less ugly.