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diff --git a/libk3b/plugin/k3baudioclient.h b/libk3b/plugin/k3baudioclient.h
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+++ b/libk3b/plugin/k3baudioclient.h
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+/* 
+ *
+ * $Id: k3baudioclient.h 619556 2007-01-03 17:38:12Z trueg $
+ * Copyright (C) 2004 Sebastian Trueg <trueg@k3b.org>
+ *
+ * This file is part of the K3b project.
+ * Copyright (C) 1998-2007 Sebastian Trueg <trueg@k3b.org>
+ *
+ * This program 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 2 of the License, or
+ * (at your option) any later version.
+ * See the file "COPYING" for the exact licensing terms.
+ */
+
+#ifndef _K3B_AUDIO_CLIENT_H_
+#define _K3B_AUDIO_CLIENT_H_
+
+#include "k3b_export.h"
+/**
+ * Interface for all K3b audio client classes which may attach to 
+ * a K3b Audio Server to play 44100 16bit stereo audio data.
+ */
+class LIBK3B_EXPORT K3bAudioClient
+{
+ public:
+  virtual ~K3bAudioClient();
+
+  /**
+   * if this method returns a value below 0 streaming is stopped.
+   */
+  virtual int read( char* data, int maxlen ) = 0;
+
+ protected:
+  K3bAudioClient();
+
+  /**
+   * This will start the streaming.
+   */
+  void startStreaming();
+
+  /**
+   * This stops the streaming,
+   */
+  void stopStreaming();
+
+ private:
+  bool m_attached;
+};
+
+#endif