My set up is very simple: ATV hooked via HDMI to 42LG70. I have an iPod Hi-Fi that I no longer use so I connected it to the ATV via optical Toslink. However, since the ATV is hooked to the TV via HDMI, I get sound out of both TV and Hi-Fi. Anybody use a similar set-up and can help me enhance this? Or any suggestions for incorporating an iPod Hi-Fi?