Multi Room Audio Player November update. Please download it here.
[-] Fixes a Spotify bug with empty (null) playlist;
[+] Added addZone and removeZone commands to build-in Web Remote;
[+] Added integrity check for the settings xml files;
[+] Added a new function that prevent players to play in the same zone;
[+] Added an ability to start Multi Room Audio System on Windows startup;
[+] Added an ability to open Workspace by double click.
You can view all version history here.