'Set the MRL to play.
Warning: most audio and video options, such as text renderer,
have no effects on an individual media. These options must be
set at the vlc.Instance or vlc.MediaPlayer instanciation.
@param mrl: The MRL
@param options: optional media option=value strings
@return: the Media object'

def set_mrl(self, mrl, *options):

    m = self.get_instance().media_new(mrl, *options)
    self.set_media(m)
    return m
