I is possible to ad a streaming station as a playlist in MPD. Just create a file, e.g. /var/lib/mpd/playlists/20 Radio Toscana Classica.m3u with a single line:
https://nr12.newradio.it/stream/8744
mpc rescan mpc listall mpc add "The Rolling Stones - Jumpin' Jack Flash.mp3" mpc find '(title == "Sabato")' mpc findadd '(title == "Sabato")' mpc playlist mpc play mpc current mpc status
mpc lsplaylists mpc load "RAI Radio 1" mpc playlist mpc play 4
mpc stop mpc clear