I saw videos on youtube where people have say.. 2 logitech z5500's or one of those and a z2300, or any 2 speakers. If I have a logitech z 2300 speaker set already, and if i buy a logitech z 906 (5.1 speaker system) is there a way to wire it for 7.1 surround? If not how can i hook these 2 speaker sets together into my computer? The z 2300 is a 2.1 speaker set but only has 1 regular 3.5 mm jack. I'm not sure about the z 906 and its connectivity.