More updates:
First, they repealed the "you must install a sprinker in your home" law. Now our already troubled building industry will not be fully destroyed.
Second, more pics!
Hat channel going up. Home depot sells it as furring strips in my area. It is over in the corner near the drywall, if anyone is looking for it. I also found that most Home Depot workers have no clue what it is.

Wiring is "stapled" up nice and neat. Why do they call them staples when you have to use a hammer to put them in and not a stapler?

My bud Chris tapping the air inlet lines off the existing ventillation system.

The two incoming air lines hanging in the room. We ran it a bit and the humidity in the basement vanished almost instantly, it was magical! I will be SOOOO happy this next winter. That is my cat Anubis...he is my home inspector. He will now spend the next several hours looking closely at EVERYTHING I did.

Next up is the false soffit and true soffit around the top of the screen area. The return line will go in the far side, by the outer wall, and travel around a corner, through insulated materials, and back into the return duct for the ventillation system. Then we will run conduit lines, one to where the projector is to be mounted and one to the outside of the room.