I sold my Z-5500's months ago and seeing a great deal on some speakers I decided to buy them. 2 pioneer rear satellites and a pioneer center for $15 Now I'm in the market for a receiver but I'm unsure of what inputs I'm looking for to have 5.1. My sound card is this . With the logitech system I just used the cable provided. From what I've been able to gather so far is that I would need 3 and a receiver with 6 inputs. Is this right and if so are there any other options?