HaHaHaHaHaHaHaHaHaI didn't know that the Onion posted audio files parodying the Beloved Leader's radio addresses. Listen, for example, to "Katrina".
Many thanks to the humorless White House staff for publicizing this vital resource by demanding that The Onion cease using the Presidential seal (no, I'm afraid that is not a joke), to the New York Times for noticing, and for Jane Galt for pointing me to it.