Ok, think I am starting to get the picture
Ok so essentially I will have to swap the RC's around depending on if I want to play PC or Xbox....The xbox doesnt have headphone jack does it?
Swapping is going annoy you. No headphone jack either. See, your speaker system was created with only being used with 1 source in mind. In this case your PC. Your screen does not have build in speakers which just makes it worse.
How are you currently getting sound from your xbox?