I was in a hurry when I posted these this morning, so a little more info:
It looks like a lot of ducts, and it is, but you have to remember, each room has its own
oversized supply AND return.
In fact:
The CR has 2 individual supply and return lines.
The live room has 3 supply and 2 returns.
The Drum room has 2 supply and 1 return.
The vocal booth and kitchen each have 1 supply and 1 return.
The bathroom has 1 supply, and... ummm, no return.
All of those go to a baffeled and insulated "distribution box" that's above the bathroom, and next to the mech. closet.
Due to the sheer number of ducts, and the fact that they're over sized, and the limited amount of clearence in the "web" of the truss, it was a real challenge for the contractor to route all the supply and return lines. He would have LOVED to have some fur-downs along the walls, but they're pulling it off!