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diff --git a/demos/modules/gaudin/main.c b/demos/modules/gaudin/main.c
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+/*
+    ChibiOS/GFX - Copyright (C) 2012, 2013
+                 Joel Bodenmann aka Tectu <joel@unormal.org>
+
+    This file is part of ChibiOS/GFX.
+
+    ChibiOS/GFX is free software; you can redistribute it and/or modify
+    it under the terms of the GNU General Public License as published by
+    the Free Software Foundation; either version 3 of the License, or
+    (at your option) any later version.
+
+    ChibiOS/GFX is distributed in the hope that it will be useful,
+    but WITHOUT ANY WARRANTY; without even the implied warranty of
+    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+    GNU General Public License for more details.
+
+    You should have received a copy of the GNU General Public License
+    along with this program.  If not, see <http://www.gnu.org/licenses/>.
+*/
+
+/**
+ * This demo demonstrates the use of the GAUDIN module to read audio channel 0.
+ * The audio channel gets read to display a very simple oscilloscope.
+ *
+ * It also demonstrates how to write your own custom GWIN window type.
+ */
+#include "ch.h"
+#include "hal.h"
+#include "gfx.h"
+
+/* Include our custom gwin audio oscilloscope */
+#include "gwinosc.h"
+
+/* Specify our timing parameters */
+#define	MY_AUDIO_FREQUENCY	4000			/* 4khz */
+#define MY_AUDIO_CHANNEL	0				/* Use channel 0 */
+
+/* Data */
+static GScopeObject			gScopeWindow;
+
+/*
+ * Application entry point.
+ */
+int main(void) {
+	GHandle					ghScope;
+	coord_t					swidth, sheight;
+
+	halInit();
+	chSysInit();
+	gdispInit();
+	gdispClear(Black);
+
+	/* Get the screen dimensions */
+	swidth = gdispGetWidth();
+	sheight = gdispGetHeight();
+
+	/* Set up the scope window to fill the screen */
+	ghScope = gwinCreateScope(&gScopeWindow, 0, 0, swidth, sheight, MY_AUDIO_CHANNEL, MY_AUDIO_FREQUENCY);
+	gwinSetBgColor(ghScope, White);
+	gwinSetColor(ghScope, Red);
+	gwinClear(ghScope);
+
+	/* Just keep displaying the scope traces */
+	while (TRUE) {
+		gwinWaitForScopeTrace(ghScope);
+	}
+}