Here's how it works...

You have to follow the links from within your PSP browser, and when you find a podcast you want to try, then you can listen live (streaming on-demand podcast), or you can subscribe (and the PSP can be programmed to download it automatically). Look for the RSS or XML chicklet button and click on it (X).


Cool NASA video & link to more PodCasts

Ride the Space Shuttle's Solid Rocket Boosters all the way down...
Link= STS-122: Booster Camera Launch Video
(Direct link to file for downloading)

Link= Many more NASA PodCasts (index page)
(Contains RSS buttons for subscribing)

Link= NASA's RSS Page (a goldmine)