http://mpegmedia.abc.net.au/rn/podcast/2009/07/orr_20090726.mp3 2009-07-26 Zen, the science of clean engines and bureaucracy http://mpegmedia.abc.net.au/rn/podcast/2009/07/orr_20090726.mp3 2009-07-25 http://www.odeo.com/uploads/0009/6430/serial_5213_medium.png