Growing up in the 60's/70's I had three brothers and a sister. My mom and dad were always into music and we had several tube stereos and a large console set with the turntable, radio and speakers built into a beautiful furniture cabinet with tweed grill cloth covering the speakers. You could see the orange glow from the tubes in the dark and a warm comforting sound.
Every Sunday after church while Mom was making dinner Dad would be spinning Big Band~(Dorsey, Miller, Cugat, Kaye, Lombardo, Cunniff, Sinatra, Como, Basie, Ellington, 101 Strings.)
We never messed with the stereos. We knew it was something important and should be respected. Neither my Mom or Dad told us to "like" music. They did,~ and we got use to it as a normal part of family life. (There were only three TV channels back then!)... When we wanted to listen Mom or Dad would put on the record and push play.
When we each were old enough my parents bought us boys our own record player and my sister got one for her a her girlfriends to listen to. (Bobby Sherman, Hermans Hermits, Monkees, Dave Clark Five.) The boys listened to Rascals, Turtles, Yardbirds, Beatles, Stones, Hendrix.
Don't make a big deal out of it and let the child know that the stereo system is one of your toys and that you want him/her to enjoy and respect it for it gives you a lot of pleasure. Set boundaries and you will be fine. Hopefully you will share this passion/hobby with them for many years to come.
I am really missing my DAD right about now.......