I have been reading a book lately about acoustics and sound engineering, and I have been wondering about why people sound proof a mixing room. I understand that you want an absolutley straight sound, but if you think about it, why not mix in a normal enviroment? Thats the enviroment things are going to be listened to. I think it would be more realistic to mix down, using a small stereo system, and a cluttered room. Can anyone explain the logic of spending ten thousands of dollars on a soundproof room?