I have been creating mathcasts (math screencasts) for a little over a year and have recently begun to use Camtasia Studio to produce them. My students can access the mathcasts via our district website but I would like them to be able to subscribe and/or download them to their iPod or other portable devices. Does anyone have any advice on how to make this possible? Is there a hosting site that may be better than others? Any suggestions would be appreciated.