MP4 : Building Bridges Gateway program - special edition - Guests; Prof. Leonard Swidler, Larry Greenfield, David Spady, Guy Benson (April 19, 2013)FLV : Building Bridges Gateway program - special edition - Guests; Prof. Leonard Swidler, Larry Greenfield, David Spady, Guy Benson (April 19, 2013)MP4 FOR IPOD (edge) : Building Bridges Gateway program - special edition - Guests; Prof. Leonard Swidler, Larry Greenfield, David Spady, Guy Benson (April 19, 2013)MP3 : Building Bridges Gateway program - special edition - Guests; Prof. Leonard Swidler, Larry Greenfield, David Spady, Guy Benson (April 19, 2013)