http://ne.edgecastcdn.net/000873/archive-2009/cpf-02-25-09.m4v Obama and Presidential Power: Change or Continuity? http://feeds.cato.org/~r/CatoEventVideos/~3/3C-MuyX5z_s/cpf-02-25-09.m4v 2009-02-24 http://www.odeo.com/uploads/0003/9107/serial_703281_medium.png