Hello, just purchased and set up my first slingbox... it is a 500. As soon as I start the slingplayer on my iPhone I lose sound on my tv that the slingbox is hooked up to. Is this normal? If not, any recommendations how to correct this. This would be annoying if I were trying to watch while I am away and my wife or kids are trying to watch the television at home with no sound. Any help is appreciated.