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diff --git a/pysoundtouch/soundtouch/source/SoundTouchDLL/SoundTouchDLL.h b/pysoundtouch/soundtouch/source/SoundTouchDLL/SoundTouchDLL.h
new file mode 100644
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+++ b/pysoundtouch/soundtouch/source/SoundTouchDLL/SoundTouchDLL.h
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+//////////////////////////////////////////////////////////////////////////////
+///
+/// SoundTouch DLL wrapper - wraps SoundTouch routines into a Dynamic Load 
+/// Library interface.
+///
+/// Author        : Copyright (c) Olli Parviainen
+/// Author e-mail : oparviai 'at' iki.fi
+/// SoundTouch WWW: http://www.surina.net/soundtouch
+///
+////////////////////////////////////////////////////////////////////////////////
+//
+// $Id: SoundTouchDLL.h 65 2009-02-23 08:33:13Z oparviai $
+//
+////////////////////////////////////////////////////////////////////////////////
+//
+// License :
+//
+//  SoundTouch audio processing library
+//  Copyright (c) Olli Parviainen
+//
+//  This library is free software; you can redistribute it and/or
+//  modify it under the terms of the GNU Lesser General Public
+//  License as published by the Free Software Foundation; either
+//  version 2.1 of the License, or (at your option) any later version.
+//
+//  This library 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
+//  Lesser General Public License for more details.
+//
+//  You should have received a copy of the GNU Lesser General Public
+//  License along with this library; if not, write to the Free Software
+//  Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA
+//
+////////////////////////////////////////////////////////////////////////////////
+
+#ifndef _SoundTouchDLL_h_
+#define _SoundTouchDLL_h_
+
+#ifdef __cplusplus
+extern "C" {
+#endif
+
+#ifdef DLL_EXPORTS
+    #define SOUNDTOUCHDLL_API __declspec(dllexport)
+#else
+    #define SOUNDTOUCHDLL_API __declspec(dllimport)
+#endif
+
+typedef void * HANDLE;
+
+/// Create a new instance of SoundTouch processor.
+SOUNDTOUCHDLL_API HANDLE __stdcall soundtouch_createInstance();
+
+/// Destroys a SoundTouch processor instance.
+SOUNDTOUCHDLL_API void __stdcall soundtouch_destroyInstance(HANDLE h);
+
+/// Get SoundTouch library version string
+SOUNDTOUCHDLL_API const char *__stdcall soundtouch_getVersionString();
+
+/// Get SoundTouch library version Id
+SOUNDTOUCHDLL_API unsigned int __stdcall soundtouch_getVersionId();
+
+/// Sets new rate control value. Normal rate = 1.0, smaller values
+/// represent slower rate, larger faster rates.
+SOUNDTOUCHDLL_API void __stdcall soundtouch_setRate(HANDLE h, float newRate);
+
+/// Sets new tempo control value. Normal tempo = 1.0, smaller values
+/// represent slower tempo, larger faster tempo.
+SOUNDTOUCHDLL_API void __stdcall soundtouch_setTempo(HANDLE h, float newTempo);
+
+/// Sets new rate control value as a difference in percents compared
+/// to the original rate (-50 .. +100 %);
+SOUNDTOUCHDLL_API void __stdcall soundtouch_setRateChange(HANDLE h, float newRate);
+
+/// Sets new tempo control value as a difference in percents compared
+/// to the original tempo (-50 .. +100 %);
+SOUNDTOUCHDLL_API void __stdcall soundtouch_setTempoChange(HANDLE h, float newTempo);
+
+/// Sets new pitch control value. Original pitch = 1.0, smaller values
+/// represent lower pitches, larger values higher pitch.
+SOUNDTOUCHDLL_API void __stdcall soundtouch_setPitch(HANDLE h, float newPitch);
+
+/// Sets pitch change in octaves compared to the original pitch  
+/// (-1.00 .. +1.00);
+SOUNDTOUCHDLL_API void __stdcall soundtouch_setPitchOctaves(HANDLE h, float newPitch);
+
+/// Sets pitch change in semi-tones compared to the original pitch
+/// (-12 .. +12);
+SOUNDTOUCHDLL_API void __stdcall soundtouch_setPitchSemiTones(HANDLE h, float newPitch);
+
+
+/// Sets the number of channels, 1 = mono, 2 = stereo
+SOUNDTOUCHDLL_API void __stdcall soundtouch_setChannels(HANDLE h, unsigned int numChannels);
+
+/// Sets sample rate.
+SOUNDTOUCHDLL_API void __stdcall soundtouch_setSampleRate(HANDLE h, unsigned int srate);
+
+/// Flushes the last samples from the processing pipeline to the output.
+/// Clears also the internal processing buffers.
+//
+/// Note: This function is meant for extracting the last samples of a sound
+/// stream. This function may introduce additional blank samples in the end
+/// of the sound stream, and thus it's not recommended to call this function
+/// in the middle of a sound stream.
+SOUNDTOUCHDLL_API void __stdcall soundtouch_flush(HANDLE h);
+
+/// Adds 'numSamples' pcs of samples from the 'samples' memory position into
+/// the input of the object. Notice that sample rate _has_to_ be set before
+/// calling this function, otherwise throws a runtime_error exception.
+SOUNDTOUCHDLL_API void __stdcall soundtouch_putSamples(HANDLE h, 
+        const float *samples,       ///< Pointer to sample buffer.
+        unsigned int numSamples     ///< Number of samples in buffer. Notice
+                                    ///< that in case of stereo-sound a single sample
+                                    ///< contains data for both channels.
+        );
+
+/// Clears all the samples in the object's output and internal processing
+/// buffers.
+SOUNDTOUCHDLL_API void __stdcall soundtouch_clear(HANDLE h);
+
+/// Changes a setting controlling the processing system behaviour. See the
+/// 'SETTING_...' defines for available setting ID's.
+/// 
+/// \return 'TRUE' if the setting was succesfully changed
+SOUNDTOUCHDLL_API BOOL __stdcall soundtouch_setSetting(HANDLE h, 
+                int settingId,   ///< Setting ID number. see SETTING_... defines.
+                int value        ///< New setting value.
+                );
+
+/// Reads a setting controlling the processing system behaviour. See the
+/// 'SETTING_...' defines for available setting ID's.
+///
+/// \return the setting value.
+SOUNDTOUCHDLL_API int __stdcall soundtouch_getSetting(HANDLE h, 
+                          int settingId    ///< Setting ID number, see SETTING_... defines.
+                );
+
+
+/// Returns number of samples currently unprocessed.
+SOUNDTOUCHDLL_API unsigned int __stdcall soundtouch_numUnprocessedSamples(HANDLE h);
+
+/// Adjusts book-keeping so that given number of samples are removed from beginning of the 
+/// sample buffer without copying them anywhere. 
+///
+/// Used to reduce the number of samples in the buffer when accessing the sample buffer directly
+/// with 'ptrBegin' function.
+SOUNDTOUCHDLL_API unsigned int __stdcall soundtouch_receiveSamples(HANDLE h, 
+            float *outBuffer,           ///< Buffer where to copy output samples.
+            unsigned int maxSamples     ///< How many samples to receive at max.
+            );
+
+/// Returns number of samples currently available.
+SOUNDTOUCHDLL_API unsigned int __stdcall soundtouch_numSamples(HANDLE h);
+
+/// Returns nonzero if there aren't any samples available for outputting.
+SOUNDTOUCHDLL_API int __stdcall soundtouch_isEmpty(HANDLE h);
+
+#ifdef __cplusplus
+}
+#endif
+
+#endif  // _SoundTouchDLL_h_
+