https://github.com/mikiair/raspi-gpio-mpdc?tab=readme-ov-file
https://stmllr.net/blog/streaming-audio-with-mpd-and-icecast2-on-raspberry-pi/
https://icecast.org/docs/icecast-trunk/
https://www.mediarealm.com.au/articles/icecast-https-ssl-setup-lets-encrypt/
Edit two lines in /etc/default/icecast2
USERID=root
GROUPID=root
Edit the following lines in /etc/icecast2/icecast.xml
<listen-socket>
<port>80</port>
<listen-socket>
in the security section:
<changeowner>
<user>icecast2</user>
<group>icecast</group>
</changeowner>