Hi Jettore, thanks again for your response.
But what about the processor?
I've got five or six sources that need to be input into the processor, and then the processor needs to, in turn, output to one of several devices: headphones, speakers or back into the computer's line-in.
So there are two "bottlenecks" right now where I'm having to switch connections all the time, not just one.
So that causes a receiver such as you've described to not seem like a complete answer to my troubles - unless I'm not understanding the totality of your suggestion.