How do I get 5.1 out of Game Theater without using RCA plugs

[mrEvil]

The question is how do I achieve 5.1 out of the Game Theater with my Z-640's without using using the RCA connectors for the subwoofer and center channel? The 640's have 3 sets of "outputs" - front, rear and center/subwoofer. Easy to see how to do it on my SB Live since the 3rd plug-in goes into the SPDIF port (going off memory, but it is easy to do).....cannot find the same thing on the Game Theater.

Can anyone help?

 

[UncleWai]

You can go to radio shack and get a 1/8" to RCA adapter.
Y adapter

then, you have the red and white cable, you can connect to the center and subwoofer input.
my breakout box