Mac users: Steps 1-4 work well for Mac Firefox, as do other add-ons. But Steps 5-6 do not work on a Mac. Suggest VisualHub (http://www.techspansion.com/visualhub/) for this purpose. An entirely different Mac approach is via Screen Mimic (http://www.polarian.com/), wherein you simply play the video you wish to capture (which need not be YouTube), start the recorder, and a corresponding local file is created. It can capture audio too. The captured file can be edited, for example, in Quicktime Pro. Dr. Martin E. Feder E-Mail: m-feder@uchicago.edu Martin Feder