'Stop the requests being sent.'

def _send_stop(self, widg=None):

    self._sendStopped = True
    self.sendPlayBut.change_internals('', gtk.STOCK_MEDIA_PLAY, 'Sends    the    pending    requests')
    self.sendPlayBut.disconnect(self.sPB_signal)
    self.sPB_signal = self.sendPlayBut.connect('clicked', self._send_start)
    self.sSB_state.change(self, False)
    self.throbber.running(False)
