Fantastic! Being able to sync with UI sliders is superb - long needed. And lol, back in January I made a music player that could be faded-out with Timeline and then fade-in again at selected volume. I had to use discrete values, many buttons and layers of relays (I'm not a coder). To date, my proudest achievements are once saving someone's life and making that damn player.
And then I saw these today and the same thing can be achieved in minutes. This is both fantastic... and profoundly upsetting :D