Ceramic brake pads, not organic. Asbestos is no longer used in brakes. Regardless, it was a good guess.
"My thought was that a dedicated product for home entertainment, complete, say, with fabric covered interior boundaries (which would cover acoustic treatments, hide wiring, in-wall speakers, etc??), and other features, could might be feasible, no?"
You can do the exact same thing with the walls that are already in your house. Not only that, in wall speakers suck. Why go through the trouble of making a room like this only to fill it with low end gear?
"My thought was that a dedicated product for home entertainment, complete, say, with fabric covered interior boundaries (which would cover acoustic treatments, hide wiring, in-wall speakers, etc??), and other features, could might be feasible, no?"
You can do the exact same thing with the walls that are already in your house. Not only that, in wall speakers suck. Why go through the trouble of making a room like this only to fill it with low end gear?