Comment by dmd

I had grand plans to build something like this when my kids were small, but ended up building this https://github.com/dmd/nkplay/ instead.

It's just a rpi plugged into a standalone numeric keypad, acting as a jukebox. Playlists are numbered.

By the time my kids were about three, they could enter the numbers on their own, and by four they had memorized the playlists so well they didn't look at the printed catalog any more.