hi. i am making an audio mixer and i want to have a mute button for each channel. i'd like to have either a digital switch, or a touch switch. also i want an led to light when they are or aren't muted (it doesn't matter which). the question is: is there a schematic somewhere of a touch switch with led indicator. i would prefere not to use relays as they make an audible click. the switch can't put power out - it must put the input signal out. Is it possible?!?