We moved house shortly after having our first kid. The music was a big issue for me - we were fortunate enough to find a house that has a basement, so my main system is down there. I now have a small system in the living room (which has no TV) - a Squeezebox, T-amp and Heybrook Sextets, which are against the wall, nice and discreet. There are also SBs dotted around the house for music and radio wherever. We use the largest bedroom as a TV/computer room.
When you have kids, you have to think about how you're going to live, it changes everything. I used to live in central London, and go to theatre and concerts at least weekly. I've not been for years now, but I do have a dedicated listening room, which I didn't have before! It's easy to assume that you can mostly carry on your old life, but it just isn't possible. You need to plan your life, and your house, around your new situation.
So the answer is to move house, I guess!