I'm looking for the lowest cost option to power my whole home audio system. I have 10 rooms with 2 speakers in each, all running to a single audio panel with RCA audio connectors. I've looked at an 8 zone amp, but it looks like that will run me about $2500. I'm looking for alternatives. Idea - Multi-channel networked audio switch? Does something exist where I can control which channel to power (one at a time), either from a computer or iphone over the network? Any suggestions would be most appreciated!