This software uses code of FFmpeg licensed under the LGPLv2.1 and its source can be downloaded here

Command line used to compile:
CPPFLAGS="$CPPFLAGS -I/usr/local/include" ./configure --disable-everything --disable-ffprobe --disable-ffplay --extra-ldflags='-L/usr/local/lib -static' --target-os=mingw32 --arch=x86 --pkg-config-flags="--static" --disable-pthreads --disable-debug --enable-w32threads --enable-encoder=aac --enable-filter=waveform --enable-filter=aresample --enable-protocol=pipe --enable-decoder=pcm_s16le --enable-muxer=adts --enable-demuxer=wav --enable-demuxer=pcm_s16le --enable-demuxer=pcm_f32le --enable-demuxer=pcm_f32be --enable-protocol=file --enable-decoder=pcm_f32le --enable-decoder=pcm_f32be --enable-libfdk-aac --enable-encoder=libfdk_aac && make clean && make -j4

ffmpeg version 3.0 Copyright (c) 2000-2016 the FFmpeg developers
built with gcc 5.3.0 (Rev2, Built by MSYS2 project)
configuration: --disable-everything --disable-ffprobe --disable-ffplay --extra
-ldflags='-L/usr/local/lib -static' --target-os=mingw32 --arch=x86 --pkg-config-
flags=--static --disable-pthreads --disable-debug --enable-w32threads --enable-e
ncoder=aac --enable-filter=waveform --enable-filter=aresample --enable-protocol=
pipe --enable-decoder=pcm_s16le --enable-muxer=adts --enable-demuxer=wav --enabl
e-demuxer=pcm_s16le --enable-demuxer=pcm_f32le --enable-demuxer=pcm_f32be --enab
le-protocol=file --enable-decoder=pcm_f32le --enable-decoder=pcm_f32be --enable-
libfdk-aac --enable-encoder=libfdk_aac
libavutil 55. 17.103 / 55. 17.103
libavcodec 57. 24.102 / 57. 24.102
libavformat 57. 25.100 / 57. 25.100
libavdevice 57. 0.101 / 57. 0.101
libavfilter 6. 31.100 / 6. 31.100
libswscale 4. 0.100 / 4. 0.100
libswresample 2. 0.101 / 2. 0.101