Update i18n strings and ...

... remove more hard-coded strings

include/AudioDeviceSetupWidget.h

@@ -30,6 +30,7 @@
 
 class AudioDeviceSetupWidget : public TabWidget
 {
+    Q_OBJECT
 public:
 	AudioDeviceSetupWidget( const QString & _caption, QWidget * _parent );
 

include/MidiSetupWidget.h

@@ -33,6 +33,7 @@ class QLineEdit;
 
 class MidiSetupWidget : public TabWidget
 {
+	Q_OBJECT
 	MidiSetupWidget( const QString & caption, const QString & configSection,
 		const QString & devName, QWidget * parent );
 public: