Currently this is just something I created in 2-3 hours on a Sunday afternoon. I can send it to you. But it is not fully ready yet:
The <div> blocks are currently jumping if the Artist/Album/Track info is too long. Also the Play/Pause button displays a stati Play image. I did not find a way yet to swap the image to Pause if the zone is already playing.
I already adjusted it a little bit to fit on the Raspberry Pi 7" touchscreen. I think this would be a very good use case for the http-API.
