Traceback (most recent call last):
  File "/usr/bin/soundconverter", line 2145, in on_convert_button_clicked
    self.do_convert()
  File "/usr/bin/soundconverter", line 2115, in do_convert
    self.converter.run()
  File "/usr/bin/soundconverter", line 514, in run
    self.setup()
  File "/usr/bin/soundconverter", line 633, in setup
    self.tasks[0].setup()
  File "/usr/bin/soundconverter", line 713, in setup
    self.play()
  File "/usr/bin/soundconverter", line 766, in play
    self.pipeline = gst.parse_launch(self.command)
GError: geen element "Marley"