Originally posted by W-_-W
I want surround sound for medal of honour, a splitter won't do it right?
I would think it would work. With most 4.1 systems there is an audio in/out for both sets of channels, so I am assuming yours is no exception. And since today's Macs have one audio port you can't combine the two audio plugs into the one socket. That's why you need a Y audio splitter.
As for 5.1 to 4.1, the only way I can think of is if you get the splitter, as I mentioned before, and disable the center channel (meaning disconnect the center plug at both in/out). Then plug in the left and right channels to the splitter.
No guarentees, but I would think that's how it works.