I am posting this here, in addition to the other forum on studio construction, since it has been there for some time without any replies. Maybe it will get better views here. To me, it seems like an important question to which there must be an answer. I seem to recall reading somewhere (in a book) that tracking and monitoring back (listening to the mix) in the same room is not good, due to a build up of room modes, in effect, room modes are printed to the mix, and then are played back and thus summed with the room modes in playback, leading to a misread of the mix. Is this true? If so, is there any way to combat this if one must track and listen back in the same room, besides headphones?