Update mainmenu.json

config/mainmenu.json

@@ -2,12 +2,16 @@
 	//images used in game selection screen
 	"game-select" : ["gamselb0", "gamselb1"],
 
+	//Loading screen background and progress bar
 	"loading" :
 	{
 		"background" : ["loadbar"],
 		"x": 395, "y": 548, "size": 18, "amount": 20, "name": "loadprog"
 	},
 
+	//Multiplayer selection image
+	"multiplayer" : ["mumap"],
+	
 	//Main menu window, consists of several sub-menus aka items
 	"window":
 	{