"What makes one curriculum work for so many people, in diverse circumstances, all around the world? In her soul-stirring keynote address, Advisory member Lynn Bruce shares illuminating observations and testimony from fifteen years in the heart of AO. Spoiler: There is a hidden treasure inside AO, and some day it just might save your life."The audio file is 99 cents (U.S.) today (Friday) and Saturday; then it will be U.S.$5.
Here is the link to order your download. The other four plenary talks are available at that link as well.