Added a system that will handle BGM. Created specific logic for sounds to loop like Petter wants.

src/Game/Systems/BackgroundMusicSystem.cpp

@@ -0,0 +1,23 @@
+#include "../Game/Systems/BackgroundMusicSystem.h"
+
+BackgroundMusicSystem::BackgroundMusicSystem(SystemParams params)
+    : System(params)
+    , PureSystem("SoundEmitter")
+{
+
+}
+
+BackgroundMusicSystem::~BackgroundMusicSystem()
+{
+    
+}
+
+void BackgroundMusicSystem::UpdateComponent(EntityWrapper& entity, ComponentWrapper& cEmitter, double dt)
+{
+
+}
+
+void BackgroundMusicSystem::mainMenuLoop()
+{
+
+}