I don't dictate a lot of policy in my house, but I refuse to listen to country, classical, opera or whiny chick bullshit music.
I've issued a general order that forbids any of that crappy music to be stored on any of my computers. She can put it on her own laptop if she wishes.
I've engineered the sound system in my house to be just complicated enough for non tekkies to be unable to use it, and the policy remains in force 24/7.