TD: various map and script fixes

mods/cnc/maps/gdi04b/gdi04b.lua

@@ -110,6 +110,12 @@ SetupWorld = function()
 	Trigger.OnRemovedFromWorld(crate, function() gdi.MarkCompletedObjective(gdiObjective) end)
 end
 
+initialSong = "fist226m"
+PlayMusic = function()
+	Media.PlayMusic(initialSong, PlayMusic)
+	initialSong = nil
+end
+
 WorldLoaded = function()
 	gdi = Player.GetPlayer("GDI")
 	nod = Player.GetPlayer("Nod")
@@ -138,6 +144,8 @@ WorldLoaded = function()
 
 	SetupWorld()
 
+	PlayMusic()
+
 	bhndTrigger = false
 	Trigger.OnExitedFootprint(BhndTrigger, function(a, id)
 		if not bhndTrigger and a.Owner == gdi then