Ah, OK. This is surely something that would be very welcome for mobile users. gPodder can do it, but what needs to be done is to interface gPodder with the browser and set it up to handle feeds (when the browser "sees" an audio/video feed) and optionally also some URI schemes.

I'd probably need help from the browser team, because I would need to know how to set up gPodder (or more generic: some generic application/binary) as a feed handler for audio and video podcasts. And maybe also as a URL handler for pcast://, itms://, itpc:// links (which are some different schemas that work for podcasts and are used on some pages).

Do you know whom I can ask for help in this area? Or should I file a bug report with a documentation request?

What do you see when opening a link like this in the Maemo 5 browser? http://lugradio.org/episodes.rss