i am thinking about buying a x-fi sound car.( the cheapest one tihout the extra box) the problem is i only count 4 audio holes on the back of the card. so does this mean if you have 7.1 surround there are no ports for a line in? and is there any way to connect the digital ports up to the card without buying the more expensive one? also is the a way to buy the base x-fi and later upgrade buy buying just the box?