I’m happy to report that the recording from my Reform Symposium presentation on Interactivity and Multimedia in Math is available to be downloaded here. Almost all of the recordings for the other presentations are up as well, which you can access here.
I’ve also uploaded my presentation slides here, so that you can download it and look at it yourself. Finally, if you are interested in further reading from my blog related to my topic, see these two links:
Update: Taking advice from @shamblesguru advice, I’ve converted my presentation, using a screen-casting program, into YouTube format.