Hi there. I'm helping my brother build a home theater room/media/music room in a new house. The house is just in the planning phase, and it looks like there will be about 300 sq feet to play with. I've looked through a lot of the archived threads on this topic but haven't seen any basic guide that covers all the requisite topics. Could someone please help us out? What are all the different things we need to consider? We're looking for a plan and all the criteria we need to consider for a system: * that will be used to play TV, movies, and music * is able to seat 15 comfortably (is that reasonable for the space we have?) We're thinking of a projector and a surround-sound system. Is that a good idea? What's the most painless way of going about this to get an comfortable, acoustically-superior room? How should we decide on room dimensions, layout, wiring, materials, damping, etc.? We (I'd) rather not spend 7 lifetimes learning this stuff if at all possible , so simple consensus answers to otherwise complicated questions are much appreciated. Thanks in advance.