Re: Sound on TV - Maybe i'm missing something here, why bother running an audio cable to your TV. No audio signal will keep it quiet.

Picture and Sound buttons are like Device buttons for the video/audio devices that you are using for the current activity. Some people load all of the DSP sound options into the Sound button so that it does not clutter the LCD for the normal activity. You can program these buttons by editing any activity->Change Behaviour of Buttons. There are 3 command buttons at the top, Activity. Sound, and Picture. The default is Activity so you may not have noticed the other buttons.