I personally use a combination of URLSnooper and Streambox!VCR for most stuff like that. URLSnooper gets you teh source URL and Streambox tricks the server into thinking that it is a player and then saves the original file as it is created. I used that combo to snag the GD reunion thing a few Augusts ago. I also used it to snag most of the RealMedia stuff that House of Blues used to host years ago.