OK all you audio gurus. I've been reading some other threads and many times "separates" get mentioned. What we need is a simple explanation of how you would build an audio system using separates. Consider that most would want or need a 5.1 or even a 7.1 system. How to do it, what pieces are needed and how do they work. What is their job.
If possible - this thread needs to start out by explaining it in a manner that all can understand.