Hi there,
As my family and I use volumio very regular on our 4 RPis, we’re not want to listen everybody to the same 
So, how about let’s say 4 preset buttons on the gui per zone? They can be assigned with e.g. radio station (most important!), playlists, spotifiy genre…
And, if the preset buttons are on the gui, redirect them to the GPIO of the RPi :mrgreen:
Keep up with the good work,
Thorsten