some changes for better integration on the mac-plattform

src/gui/qt/sound/sdlplayer.h

@@ -14,12 +14,17 @@
 #ifndef SDLPLAYER_H
 #define SDLPLAYER_H
 
-#ifdef _WIN32
+#ifdef _WIN32 
 	#include <SDL.h>
 	#include <SDL_mixer.h>
 #else
-	#include <SDL/SDL.h>
-	#include <SDL/SDL_mixer.h>
+	#ifdef __APPLE__
+		#include <SDL.h>
+		#include <SDL_mixer.h>
+	#else 
+		#include <SDL/SDL.h>
+		#include <SDL/SDL_mixer.h>
+	#endif
 #endif
 
 #include <string>