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diff --git a/nGenEx/SoundCard.h b/nGenEx/SoundCard.h
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+++ b/nGenEx/SoundCard.h
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+/*  Project nGenEx
+    Destroyer Studios LLC
+    Copyright © 1997-2004. All Rights Reserved.
+
+    SUBSYSTEM:    nGenEx.lib
+    FILE:         SoundCard.h
+    AUTHOR:       John DiCamillo
+
+
+    OVERVIEW
+    ========
+    Abstract Audio Output class (hides details of DirectSound)
+*/
+
+#ifndef SoundCard_h
+#define SoundCard_h
+
+#include "Types.h"
+#include "List.h"
+#include "ThreadSync.h"
+
+// +--------------------------------------------------------------------+
+
+class  Sound;
+class  Camera;
+struct Vec3;
+
+// +--------------------------------------------------------------------+
+
+class SoundCard
+{
+public:
+   static const char* TYPENAME() { return "SoundCard"; }
+
+   SoundCard();
+   virtual ~SoundCard();
+   
+   enum SoundStatus { SC_UNINITIALIZED,
+                      SC_OK,
+                      SC_ERROR,
+                      SC_BAD_PARAM };
+   SoundStatus    Status() const { return status; }
+
+   // Format of the sound card's primary buffer:
+   virtual bool   GetFormat(LPWAVEFORMATEX format)                { return false; }
+   virtual bool   SetFormat(LPWAVEFORMATEX format)                { return false; }
+   virtual bool   SetFormat(int bits, int channels, int hertz)    { return false; }
+   virtual bool   Pause()                                         { return false; }
+   virtual bool   Resume()                                        { return false; }
+   virtual bool   StopSoundEffects()                              { return false; }
+
+   // Get a blank, writable sound buffer:
+   virtual Sound* CreateSound(DWORD flags, LPWAVEFORMATEX format) { return 0;     }
+
+   // Create a sound resource:
+   virtual Sound* CreateSound(DWORD flags, LPWAVEFORMATEX format,
+                              DWORD len, LPBYTE data)             { return 0;     }
+
+   // once per frame:
+   virtual void   Update();
+
+   virtual void   SetListener(const Camera& cam, const Vec3& vel) { }
+   virtual DWORD  UpdateThread();
+   virtual void   AddSound(Sound* s);
+
+protected:
+
+   bool           shutdown;
+   HANDLE         hthread;
+   SoundStatus    status;
+   List<Sound>    sounds;
+   ThreadSync     sync;
+};
+
+#endif SoundCard_h
+