I have a 12 x 15 room to put my ht in. the washer dryer is in there too, but only sticks out about 12" into the room I will have the room built around them. what should I do to make the room very sound efficent and sound resistant to the apartment on the other side of the wall? also, what's some thoughts on the colors to use? im going to be putting a front projector in there later but for now, it's just a crt tv for now.....thanks for the information.....what should I do for difusers and stuff?