code: def begin(self):
          '''
          Start over and get a track.
          '''
          # Check for a start metasong
          if self.start:
              # We are in the beginning song
              self.at_beginning = True
              # And on the first track.
              self.pos = 0
          else:
              # We aren't in the beginning song
              self.at_beginning = False
              # So we need to get new one.
              self._new_song()
          return self._get_song(f begin(self):
          '''
          Start over and get a track.
          '''
          # Check for a start metasong
          if self.start:
              # We are in the beginning song
              self.at_beginning = True
              # And on the first track.
              self.pos = 0
          else:
              # We aren't in the beginning song
              self.at_beginning = False
              # So we need to get new one.
              self._new_song()
          return self._get_song()
docs: Start over and get a track.