MP3 playback: minimp3 by lieff and contributors, CC0-1.0.
https://github.com/lieff/minimp3

MP3 encoding: LAME 3.100, LGPL version 2 or later.
https://lame.sourceforge.io/
Full library source, license, generator objects and relink instructions:
MP3-encoder-relink-0.3.2.zip
