VGMstream

Dependencies
sudo apt-get install gcc g++ make build-essential git cmake libmpg123-dev libvorbis-dev libspeex-dev libavformat-dev libavcodec-dev libavutil-dev libswresample-dev yasm libopus-dev libao-dev audacious-dev libjansson-dev

git clone https://github.com/vgmstream/vgmstream.git vgmstream
cd vgmstream
mkdir build && cd build
cmake ../
make
sudo make install

List of supported formats
https://github.com/vgmstream/vgmstream/blob/master/doc/FORMATS.md

ls *.ADX | sort > playlist.m3u
vgmstream123 playlist.m3u

vgmstream-cli -o 0000.WAV 0000.DSP
for u in *.DSP;do vgmstream-cli -o "${u%.*}".wav "$u";done

audacious -> settings -> plugins -> input -> vgmstream decoder