add actual blow-into-mic sample that actually works

src/frontend/qt_sdl/AudioSettingsDialog.ui

@@ -95,7 +95,7 @@
          <string>&lt;html&gt;&lt;head/&gt;&lt;body&gt;&lt;p&gt;Noise will be forwarded to the emulated microphone, simulating blowing into the microphone.&lt;/p&gt;&lt;/body&gt;&lt;/html&gt;</string>
         </property>
         <property name="text">
-         <string>White noise</string>
+         <string>Blow noise</string>
         </property>
        </widget>
       </item>

src/frontend/qt_sdl/CMakeLists.txt

@@ -12,6 +12,7 @@ SET(SOURCES_QT_SDL
 	../Util_ROM.cpp
 	../Util_Audio.cpp
 	../FrontendUtil.h
+	../mic_blow.h
 	
 	../../../melon.qrc
 )