#include <list>
#include <cmath>
-#include <libgnomecanvasmm/canvas.h>
#include "pbd/xml++.h"
#include "pbd/controllable.h"
#include "ardour_window.h"
#include "editing.h"
#include "meterbridge.h"
-#include "nsm.h"
#include "ui_config.h"
#include "enums.h"
#include "visibility_group.h"
class ThemeManager;
class TimeInfoBox;
class MidiTracer;
+class NSM_Client;
class LevelMeterHBox;
class GlobalPortMatrixWindow;
class GUIObjectState;