Although the MLS does not show anymore information than what is posted here, on a custom built home, and any thing that is for sale I always say "everything is negotiable" and at that price I am sure something could always be worked out within reason. I am sure the theater and living area would be wired for optimum performance.
But I did get a hold of the listing agent, and she did imply the same the builder would consider. She also said this home is only about 4-5 weeks from being complete, and paint colors and floors can still be chosen. New pictures will be added soon.
Please let me know if I can help in any other way, or if you would like more information on what I learned about this home, or with any home you are interested.