Hi all, I am so green at this I make grass look pale. I am trying to build a simple A-B switch device that will allow me to select between two stereo audio input devices (Sirrius radio and an I-pod) with a singular stereo output. I had a humilating experience in an electronics wholesaler today where the clerk virtually sneered me out of the store for my asking if he could affer some suggestions. Apprently "leave" was the best he could muster. Any help will be cherished.