My soundcard has a bunch of jacks in the back and they're all the exact same size. According the Audigy2 user manual the seventh one is a digital out jack for "6 channel or compressed AC-3 SPDIF for connection to external digital devices or digital speaker systems".
This site: http://www.cablestogo.com/product_list.asp?cat%5Fid=2709 sells 3.5MM keystone jacks that looks like the jacks on the back of my soundcard. They are for IR emitters and it states that you can "Connect a 3.5mm cable from your PC sound card and play MP3s throughout your distributed audio system. 3.5mm Modules are easy to connect to UTP cable; simply push the terminal and insert the wire."
They're sold as 2 conductor or 3 conductor jacks. I wanted to know how many wires do I need and is there a particular way to wire them like you have to do with RJ-45 jacks for ethernet. I'm not concerned about switching to RCA plugs, just the wiring from jack A to jack B.
