Jan 10 (61 MB: General overview of the class.)
Jan 17 (52 MB: How is the exchange value determined?)
Jan 24 (52 MB: About email etiquette and the use of email in this class, afternoon class.)
Jan 28 (44 MB: About email etiquette and the use of email in this class for the morning class. Shorter but I think better than the one from Jan 24.)
Jan 31 (56 MB: Many examples what it means that value is an immaterial but real social substance, and money is the tangible surface mirror of this invisible substance produced in production.)
Feb 25 (50 MB: Chapter 2 and first two sections of chapter 3).
March 3 (44.3 MB: third section of Chapter 3 and chapter 4).
March 6 (37 MB: Chapters 4 and 5).
March 10 (41 MB: Chapters 5 and 6).
March 13 (56.6 MB: Chapters 6 and 10).
March 24 (46.5 MB: Chapters 10 and 12).
April 14 (44.8 MB: Question 717 and Chapter 24).
April 17 (56.2 MB: Chapter 25, Gaia hypothesis, Daisyworld).
April 21 (42.2 MB, 46 minutes: once more Chapter 25, Gaia hypothesis, Daisyworld).

Audio files for Fall 2009 and Fall 2008.