File list (Check if you may need any files):
spectrum\3rdparty
........\........\fftreal
........\........\.......\Array.h
........\........\.......\Array.hpp
........\........\.......\bwins
........\........\.......\.....\fftrealu.def
........\........\.......\debug
........\........\.......\def.h
........\........\.......\DynArray.h
........\........\.......\DynArray.hpp
........\........\.......\eabi
........\........\.......\....\fftrealu.def
........\........\.......\FFTReal.dsp
........\........\.......\FFTReal.dsw
........\........\.......\FFTReal.h
........\........\.......\FFTReal.hpp
........\........\.......\fftreal.pas
........\........\.......\fftreal.pro
........\........\.......\fftreal_wrapper.cpp
........\........\.......\fftreal_wrapper.h
........\........\.......\FFTRealFixLen.h
........\........\.......\FFTRealFixLen.hpp
........\........\.......\FFTRealFixLenParam.h
........\........\.......\FFTRealPassDirect.h
........\........\.......\FFTRealPassDirect.hpp
........\........\.......\FFTRealPassInverse.h
........\........\.......\FFTRealPassInverse.hpp
........\........\.......\FFTRealSelect.h
........\........\.......\FFTRealSelect.hpp
........\........\.......\FFTRealUseTrigo.h
........\........\.......\FFTRealUseTrigo.hpp
........\........\.......\license.txt
........\........\.......\Makefile
........\........\.......\Makefile.Debug
........\........\.......\Makefile.Release
........\........\.......\OscSinCos.h
........\........\.......\OscSinCos.hpp
........\........\.......\readme.txt
........\........\.......\release
........\........\.......\stopwatch
........\........\.......\.........\ClockCycleCounter.cpp
........\........\.......\.........\ClockCycleCounter.h
........\........\.......\.........\ClockCycleCounter.hpp
........\........\.......\.........\def.h
........\........\.......\.........\fnc.h
........\........\.......\.........\fnc.hpp
........\........\.......\.........\Int64.h
........\........\.......\.........\StopWatch.cpp
........\........\.......\.........\StopWatch.h
........\........\.......\.........\StopWatch.hpp
........\........\.......\test.cpp
........\........\.......\test_fnc.h
........\........\.......\test_fnc.hpp
........\........\.......\test_settings.h
........\........\.......\TestAccuracy.h
........\........\.......\TestAccuracy.hpp
........\........\.......\testapp.dpr
........\........\.......\TestHelperFixLen.h
........\........\.......\TestHelperFixLen.hpp
........\........\.......\TestHelperNormal.h
........\........\.......\TestHelperNormal.hpp
........\........\.......\TestSpeed.h
........\........\.......\TestSpeed.hpp
........\........\.......\TestWhiteNoiseGen.h
........\........\.......\TestWhiteNoiseGen.hpp
........\app
........\...\.gitignore
........\...\app.pro
........\...\app.pro.user
........\...\debug
........\...\engine.cpp
........\...\engine.h
........\...\frequencyspectrum.cpp
........\...\frequencyspectrum.h
........\...\images
........\...\......\record.png
........\...\......\settings.png
........\...\levelmeter.cpp
........\...\levelmeter.h
........\...\main.cpp
........\...\mainwidget.cpp
........\...\mainwidget.h
........\...\Makefile
........\...\Makefile.Debug
........\...\Makefile.Release
........\...\progressbar.cpp
........\...\progressbar.h
........\...\release
........\...\settingsdialog.cpp
........\...\settingsdialog.h
........\...\spectrograph.cpp
........\...\spectrograph.h
........\...\spectrum.h
........\...\spectrum.qrc
........\...\spectrumanalyser.cpp
........\...\spectrumanalyser.h
........\...\tonegenerator.cpp
........\...\tonegenerator.h
........\...\tonegeneratordialog.cpp
........\...\tonegeneratordialog.h