Android/iOS controlled HDMI Switch?
Maybe this already exists, but I can't seem to find it. Instead of a mechanical switchbox that switches between various sources (eg "turntable", "radio", "internet", "tv", etc.) this device would consist of a series of icons on, say, a tablet. Each icon would represent an alternative source, or a general heading for a subset of sources, to drive the loudspeaker.
Tapping the "TV" icon, for example, would cause the TV to turn on, and would connect the TV audio to the loudspeakers. The "switchbox" program would, I assume, have to communicate with some kind of electric switchbox to accomplish this.
Does this sort of thing exist?