If the goal is playing music from your kids laptops its as simple as a $20 earphone to RCA adaptor. That's what I use for sound when watching movies from my laptop.
I wouldn't go anything more than that. Because fundamentally, when it comes down to it, you are trying to introduce your kids to quality while they have been drawn into the modern fixation with quantity. They want you to be able to stream infinite variations on crap. You are trying to show them there value of selective quality. Both in music and in sound quality.
So if you succumb to temptation and buy buy buy more crap (streaming services, players, etc) all that does is blur the lines. What you want to do is hook up their laptop, play their music, let them hear how it sounds. Nobody cares about sound quality unless first they care about the music. So you get them listening to their music that they like and sounding the way they play it, by using the adaptor. Eventually they notice your music sounds better. Yes this works. Been there. Done that.
I wouldn't go anything more than that. Because fundamentally, when it comes down to it, you are trying to introduce your kids to quality while they have been drawn into the modern fixation with quantity. They want you to be able to stream infinite variations on crap. You are trying to show them there value of selective quality. Both in music and in sound quality.
So if you succumb to temptation and buy buy buy more crap (streaming services, players, etc) all that does is blur the lines. What you want to do is hook up their laptop, play their music, let them hear how it sounds. Nobody cares about sound quality unless first they care about the music. So you get them listening to their music that they like and sounding the way they play it, by using the adaptor. Eventually they notice your music sounds better. Yes this works. Been there. Done that.