diff --git a/single/RubberBandSingle.cpp b/single/RubberBandSingle.cpp
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+++ b/single/RubberBandSingle.cpp
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+/* -*- c-basic-offset: 4 indent-tabs-mode: nil -*-  vi:set ts=8 sts=4 sw=4: */
+
+/*
+    Rubber Band Library
+    An audio time-stretching and pitch-shifting library.
+    Copyright 2007-2021 Particular Programs Ltd.
+
+    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 included with this distribution for more information.
+
+    Alternatively, if you have a valid commercial licence for the
+    Rubber Band Library obtained by agreement with the copyright
+    holders, you may redistribute and/or modify it under the terms
+    described in that licence.
+
+    If you wish to distribute code using the Rubber Band Library
+    under terms other than those of the GNU General Public License,
+    you must obtain a valid commercial licence before doing so.
+*/
+
+/*
+    RubberBandSingle.cpp
+ 
+    This is a single-file compilation unit for Rubber Band Library.
+  
+    To use the library in your project without building it separately,
+    include one of the headers rubberband/RubberBandStretcher.h if
+    your project is C++ or rubberband/rubberband-c.h if you need the C
+    ABI, then add this single C++ source file to your build.
+ 
+    Don't move this file into your source tree - keep it in the same
+    place relative to the other Rubber Band code, so that the relative
+    include paths work, and just add it to your list of build files.
+  
+    This produces a build using the built-in FFT and resampler
+    implementations, except on Apple platforms where the vDSP FFT is
+    used (and you will need the Accelerate framework when linking). If
+    you want any further customisation, consider using the full build
+    system and building a standalone library.
+*/
+
+#define USE_BQRESAMPLER 1
+
+#define NO_TIMING 1
+#define NO_THREADING 1
+#define NO_THREAD_CHECKS 1
+
+#if defined(__APPLE__)
+#define HAVE_VDSP 1
+#else
+#define USE_BUILTIN_FFT 1
+#endif
+
+#include "../src/audiocurves/CompoundAudioCurve.cpp"
+#include "../src/audiocurves/SpectralDifferenceAudioCurve.cpp"
+#include "../src/audiocurves/HighFrequencyAudioCurve.cpp"
+#include "../src/audiocurves/SilentAudioCurve.cpp"
+#include "../src/audiocurves/ConstantAudioCurve.cpp"
+#include "../src/audiocurves/PercussiveAudioCurve.cpp"
+#include "../src/base/Profiler.cpp"
+#include "../src/dsp/AudioCurveCalculator.cpp"
+#include "../src/dsp/FFT.cpp"
+#include "../src/dsp/Resampler.cpp"
+#include "../src/dsp/BQResampler.cpp"
+#include "../src/system/Allocators.cpp"
+#include "../src/system/sysutils.cpp"
+#include "../src/system/Thread.cpp"
+#include "../src/RubberBandStretcher.cpp"
+#include "../src/StretchCalculator.cpp"
+#include "../src/StretcherChannelData.cpp"
+#include "../src/StretcherImpl.cpp"
+#include "../src/StretcherProcess.cpp"
+
+#include "../src/rubberband-c.cpp"
+