it is just a guess, but it seems that g_player doesn't set IsRadio flag when playing radio. Maybe for g_player there is no difference anymore if it plays radio or music?i can't see how the BASS rework might affect this.
I tested it with MediaPortal - Radio, using TVServer with built-in RadioWebStream card. As channel example - http://stream.fusionradio.fm:8004 , so this part is exactly as described above.