When you play a radio stream in players like vlc, foobar2000 or deadbeef, they read the metadata from the stream. It can be a mp3 stream with id3 tags, an ogg atream with ogg tags or aac with its own tags.
This metadata is then displayed, in the form of song name, album, artist, year, etc…
Displaying information about currently playing track & allowing scrobbling of playing tracks.
I am no longer forced to use android vlc to play my internet music radios