I posted a some new images documenting my basement remodeling project.  Here are some of finishing the fresh air intake vents and some of routing new coax and ethernet cable to the living room.

Where did the old air ducts go??

I'm currently focusing on duct work.  That consists of adding new return vents to the rec room and soundproof room, replacing the soundproof room's supply vent with insulated ductwork, and adding a new supply vent to the bathroom area.

After the ducts I'll be ready to start electrical work.  I think.