RJS audio talks on writing and selling SF

I had cause today to gather some links to podcasts of me talking about science-fiction writing and the history of the genre, and I thought I'd share them here:

• Audio lecture from Odyssey Workshop with Robert J. Sawyer on point-of-view
  
  
• Audio lecture from Odyssey Workshop with Robert J. Sawyer on "Is your science-fiction element extraneous?"
  
  
• Audio interview with Robert J. Sawyer conducted by Tee Morris about book marketing
  
  
• Audio lecture by Robert J. Sawyer: "Science Fiction as a Mirror for Reality"
  
  
• YouTube version of above lecture, with graphics

The Robert J. Sawyer Web Site