Here are the open source libraries used by uos:

=> SoundTouch audio processing library.
   Copyright (c) Olli Parviainen.
   http://www.surina.net/soundtouch/

=> PortAudio Cross-Platform Audio API.
   Copyright (c) Ross Bencina and Phil Burk
   http://www.portaudio.com/

=> SndFile audio processing library.
   Copyright (c) Erik de Castro Lopo <erikd@mega-nerd.com>
   http://www.mega-nerd.com/libsndfile/

=> Mpg123 audio processing library. 
   Copyright (c) Thomas Orgis <thomas@orgis.org>
   http://www.mpg123.de/

=> Bs2b stereo to binaural library. 
   Copyright (c) Boris Mikhaylov
   http://bs2b.sourceforge.net/

=> FAAD2 (AAC) audio processing library.
   Copyright (C) M. Bakker, Nero AG. 
   http://www.nero.com/

=> Opus audio processing library.
   http://opus-codec.org

=> Libxmp audio processing library.
   https://xmp.sourceforge.net/

=> Libfdk-aac audio processing library.
   https://github.com/mstorsjo/fdk-aac