I've got a medium sized closet in my movie room that is about 3' x 4.5' with an 8' ceiling. I'd like to use this as a place for my audio equipment but am worried about heat. I plan on replacing the door with something that has a "window" in it. Just a peice of glass that I can see into the closet. On the inside, I'll have a rack of some kind, I'm liking this flexy rack idea that I'm seeing around. I'd then like to build walls and a roof around the rack, so when the door is closed, you don't see any of the rest of the closet. I was thinking of installing a fan pulling air up in the roof of the "box". But I'm still limited to the air that is in the closet itself. There will be quite a bit of heat in there, as I use an HTPC to power my system. Anyone have any cooling ideas? I'm not against putting fans between the closet and the room as long as I can keep them quiet.