You have to change stream type in profile settings. MusicBee is quite clumsy with the net radio playlists. In Winamp or Foobar, you just drag in or run playlist file and player automatically inserts ALL contained URL's into currently playing list and plays them. MusicBee does the same but simply won't play anything unless you strictly place the stuff manually into Radio section. Which is, like i said very clumsy and weird...