code: def move(to_index)
        api('playlist.reorder', :playlist_name => playlist.id, :index_from => index, :index_to => to_index)
        playlist.songs.insert(to_index, playlist.songs.delete(self))
        true
      end
docs: Move a song from one location in the playlist to another.
  
   @param [Fixnum] to_index The index to move the song to
   @return [true]
   @raise [ArgumentError] if an invalid option is specified
   @raise [Turntabler::Error] if the command fails
     song.move(5)    # => true