This is good... So with my current 2.1's connected to the 'front' jack, and a new 2.0 pair connected to 'rear', I should get proper positional sound in games? Reason I'm confused is that a friend tried with a similar setup, and the rear speakers were playing the exact same thing as the fronts, rather than sound being positional, which is the whole point of doing it.
Also, should the 2.1 pair be connected to 'front' or 'centre'? What is the difference, and is one more advisable since that's where the sub will be?
Not "Rear", "surround" or "side". 7.1 adds rears, technically. If you set them to rear you won't get sound. Center is only a single channel for a speaker centered on your display. Front is for the left and right front speakers, which is what you have. Normally, the other channel of the port used for "front" has a signal for a dedicated subwoofer output. You do not have a dedicated subwoofer input to connect to this. You need to run your existing speakers as "full-range" which will include all bass signals that go to your your subwoofer. Your speaker system will handle splitting bass for the sub from the rest of the audio that goes to your main speakers. As far as your sound card is concerned, you just have a pair of full-range speakers, not 2 satellites and a sub.