On January 16, 2006, Al Gore spoke for about an hour at Constitution Hall (Washington, DC) as part an event on Martin Luther King Day. See the link to an MP3 file of the audio of the speech. There are links to additional speech's by Al Gore at the link
20060116gore.jpg, image/jpeg, 1215x939
Here is link to audio feed for Al Gore's speech on the threat to the Constitution as a result of actions by the "Bush administration" (1/16/2006 - Washington, DC).
http://www.radio4all.net/proginfo.php?id=16108
Here is another speech he did in November 2003 on "Civil Liberties and Terrorism"(Washington, DC)(MP3 file)
http://www.radio4all.net/proginfo.php?id=8094
Another speech he did in on "Global Warming and Climate Change" (February 16, 2005 - Los Angeles, CA)(MP3 file)
http://www.radio4all.net/proginfo.php?id=11323
www.radio4all.net/proginfo.php?id=16108
Original: Al Gore speech on Threats to Constitution by actions by the Executive Branch