[-] lots of small bugs has been fixed;
[*] Spotify player has been improved;
[*] Some user interface changes to fit 1280×1024 screen resolution.
[+] Added: New API method SpotifyLoginAsNewUser to re-login to Spotify music service;
[+] Added: New API method UpdateSpotifyCredentials to update stored Spotify login and password;
[+] Added: New API method GetSpotifyLogin to get current logged Spotify user;
[+] Added: New API method IsSpotifyLoggedin to get Spotify logged state;
[+] Added: New API method CreateVirtualSpotifyPlaylist to create custom Spotify playlist with any tracks;
[+] Added: New API method PlayAnySpotifyTrackById to play any Spotify track by Id;
[+] Added: New API method RestartApp to restart player remotely;
[+] Added: New ability to Edit Playlist after creation;
[+] Added: New ability to Edit any Playlist file from a local drive;
[+] Added: New duplex binding events (OnTrackChangedEvent, OnPlayerStateChangedEvent) for WCF API, you will be notified if player state changed;
[+] Added: Spanish language to User Interface.
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[-] 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.