def setPlaylistOrder(playlist,tracks)
      method = 'setPlaylistOrder'
      type = Boolean
      args = {:playlist=>playlist,:tracks=>Rdio::keys(tracks)}
      return_object type,method,args,true
    end
def setPlaylistOrder(playlist,tracks)
      method = 'setPlaylistOrder'
      type = Boolean
      args = {:playlist=>playlist,:tracks=>Rdio::keys(tracks)}
      return_object type,method,args,true
    end
Saves the given order of tracks in a given playlist. The new
 order must have the same tracks as the previous order (this
 method may not be used to add/remove tracks).