I have an Airport Extreme and want to get an Airport Express to stream music to my whole house system. My amplifier for my whole house speakers is in the basement of my home...am I correct in my thinking. Plug the Airport Express near my audio tuner/amp and run the audio cable to the tuner. The airport express will be able to connect with my network via wirelessly. I dont need a network cable plugged into it correct? Then we can stream iTunes throughout the home and not pay for XM anymore. Is it really that simple? Sorry for the noob question.