Hooking up two soundcards to a single set of speakers

[Yohhan]

Is there something like a m-m-f mini jack splitter that would be capable of hooking two soundcards on different boxes, up to a single set of speakers?

[Mr. C]

You bet, any decent store that deals with electronics should be able to hook you up.
As you stated, a couple of basic splitters and probably some extensions should set you right.

[zeradul]

Or you could just go from the line out of the secondary PC into the line IN of the Primary PC, and then back out to the speakers.