added music

src/Game.h

@@ -20,6 +20,7 @@
 #include <unordered_map>
 #include <unordered_set>
 #include "Location.h"
+#include "AudioPlayerAsync.h" 
 
 namespace ZL {
 
@@ -56,6 +57,7 @@ namespace ZL {
 		bool rightMouseDown = false;
 		int lastMouseX = 0;
 		int lastMouseY = 0;
+		std::unique_ptr<AudioPlayerAsync> audioPlayer;
 
 		int64_t getSyncTimeMs();
 		void processTickCount();