This is the 3rd of 4 webcasts scheduled for September-October 2007 in conjunction with Vance's class on Multiliteracies for Collaborative Learning Environments, part of the TESOL Certificate Program:
Principles and Practices of Online Teaching:
http://www.homestead.com/prosites-vstevens/files/efi/papers/tesol/ppot/portal2007.htm

This webcast was streamed on the Worldbridges Network as part of the Webcastacademy, http://www.webcastacademy.net

The audio was edited to get it down to around 20 megabytes