OK...You really have to clarify this a bit. My understanding is that 3.5mm is an analog interface, so I'm not sure I understand the interface between that and your SPIDF (digital) interface.....and the wall???? If you are talking about going from the 3.5mm to your analog (rca) interfaces, then you probably need the simple stereo 2 conductor plugs. If you are looking to do more than 2-channel audio, then you'll need to do this either 3 or 4 times depending if you are doing analog out 5.1 or 7.1.
As you can tell from my response, I'm a abit confused about what you're asking, so you may want to expound on it a bit. If I can't help, there is bound to be someone here that can.
