@evelyn Interfaces like this are the best. I once made a "remote" for the video player (totem?) on the nettop plugged into the TV-set. It was a static page with five buttons: play/stop, forward 10 secs, back 5 secs, previous file, next file, the links called the python functions that did the real job and I was: "Wow, this works so well". I bet, if I tried to find something already implemented, it would have everything and the kitchen sink, but would break every five minutes.