Best answer by savalas
...try to add the radio station manually this way: https://sonos.custhelp.com/app/answers/detail/a_id/264/~/how-to-add-an-internet-radio-station-to-sonos
The Desktop controller is required for that!
I hope this is the correct URL for the wanted radio station? MR2-Petofi Rádió: http://stream001.radio.hu: 8080/mr2.mp3 (no space character between : and 8! The forum shows a smiley then!)
A list of hungarian radio stations: http://www.listenlive.eu/hungary.html
Have fun and kind regards from Germany,