diff -r dee5afe5301f -r 3f74d0d4af4c doc/src/snippets/audio/main.cpp
--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/doc/src/snippets/audio/main.cpp	Thu Apr 08 14:19:33 2010 +0300
@@ -0,0 +1,148 @@
+/****************************************************************************
+**
+** Copyright (C) 2010 Nokia Corporation and/or its subsidiary(-ies).
+** All rights reserved.
+** Contact: Nokia Corporation (qt-info@nokia.com)
+**
+** This file is part of the test suite of the Qt Toolkit.
+**
+** $QT_BEGIN_LICENSE:LGPL$
+** No Commercial Usage
+** This file contains pre-release code and may not be distributed.
+** You may use this file in accordance with the terms and conditions
+** contained in the Technology Preview License Agreement accompanying
+** this package.
+**
+** GNU Lesser General Public License Usage
+** Alternatively, this file may be used under the terms of the GNU Lesser
+** General Public License version 2.1 as published by the Free Software
+** Foundation and appearing in the file LICENSE.LGPL included in the
+** packaging of this file.  Please review the following information to
+** ensure the GNU Lesser General Public License version 2.1 requirements
+** will be met: http://www.gnu.org/licenses/old-licenses/lgpl-2.1.html.
+**
+** In addition, as a special exception, Nokia gives you certain additional
+** rights.  These rights are described in the Nokia Qt LGPL Exception
+** version 1.1, included in the file LGPL_EXCEPTION.txt in this package.
+**
+** If you have questions regarding the use of this file, please contact
+** Nokia at qt-info@nokia.com.
+**
+**
+**
+**
+**
+**
+**
+**
+** $QT_END_LICENSE$
+**
+****************************************************************************/
+
+#include <QtGui>
+
+#include <QAudioOutput>
+#include <QAudioDeviceInfo>
+#include <QAudioInput>
+
+class Window2 : public QWidget
+{
+    Q_OBJECT
+
+public slots:
+//![0]
+    void stateChanged(QAudio::State newState)
+    {
+        switch(newState) {
+            case QAudio::StopState:
+            if (input->error() != QAudio::NoError) {
+                // Error handling
+            } else {
+
+            }
+            break;
+//![0]
+        default:
+            ;
+        }
+    }
+
+private:
+    QAudioInput *input;
+
+};
+
+class Window : public QWidget
+{
+    Q_OBJECT
+
+public:
+    Window()
+    {
+        output = new QAudioOutput;
+        connect(output, SIGNAL(stateChanged(QAudio::State)),
+            this, SLOT(stateChanged(QAudio::State)));
+    }
+
+private:
+    void setupFormat()
+    {
+//![1]
+        QAudioFormat format;
+        format.setFrequency(44100);
+//![1]
+        format.setChannels(2);
+        format.setSampleSize(16);
+        format.setCodec("audio/pcm");
+        format.setByteOrder(QAudioFormat::LittleEndian);
+//![2]
+        format.setSampleType(QAudioFormat::SignedInt);
+
+        QAudioDeviceInfo info(QAudioDeviceInfo::defaultOutputDevice());
+
+        if (!info.isFormatSupported(format))
+            format = info.nearestFormat(format);
+//![2]
+    }
+
+public slots:
+//![3]
+    void stateChanged(QAudio::State newState)
+    {
+        switch (newState) {
+            case QAudio::StopState:
+                if (output->error() != QAudio::NoError) {
+                    // Perform error handling
+                } else {
+                    // Normal stop
+                }
+                break;
+//![3]
+
+            // Handle 
+            case QAudio::ActiveState:
+                // Handle active state...
+                break;
+            break;
+        default:
+            ;
+        }
+    }
+
+private:
+    QAudioOutput *output;
+};
+
+int main(int argv, char **args)
+{
+    QApplication app(argv, args);
+
+    Window window;
+    window.show();
+
+    return app.exec();        
+}
+
+
+#include "main.moc"
+