How can I make my games systems sound come from the same speakers.?

Question

I have logitech speakers and wanted to know how i could make all my game systems sound come from only the logitech speaker and not my tv. I am only able to have one game systems sound come from the logitech speakers. Is there some kind of extention thing i need?

The speakers look like this.

http://www.logitech.com/index.cfm/speakers_audio/home_pc_speakers/devices/234&cl=us,en

Answer 1

Get an A-B Switch and change it every time you play a different console.

Answer 2

yes get an adapter that plugs into your sound card and to your amp  or  receiver pick a channel on your receiver and there you go