Wait a minute... assume everything is HDMI, if I connect the Cable box to the tv and the tv to the receiver... again all HDMI, would really need to run another cable? So, I just want to watch the TV, without the system on it should be fine, but if I want to watch a movie on HBO and run it in surround sound through the systm, I'm assuming I just switch the audio to the input that the tv is connected to correct? That should be carrying the audio signal (Dolby Digital)from the cable right?