I should probably give an actual example to make myself clear. When you refer to clicking the "i," note that doing that is what I was talking about when I wrote: "there are a very few podcasts that seem to put that info in their 'Show Description' (aka the 'Podcast Information' window) but they're the exception." In other words, clicking the "i" opens the Podcast Information window. Same window opens if you choose "Show Description" from the contextual menu that opens when you control-click on the feed name.
But the URL that appears in the Podcast Information window (besides not being selectable for copying and also being in a window that disappears if you switch apps), is just the link to the RSS page that lists ALL the episodes. It is not a link to a specific episode. What I want is the ability FROM A DOWNLOADED PODCAST EPISODE to extract the link for that specific episode. I guess this would be equivalent to clicking the "Get" button next to a dimmed episode that has not yet been downloaded, though I don't really care that clicking that link (if I could find it) wouldn't automatically download the episode into iTunes for the person to whom I would send the link.
So, for example, the link that I can extract from the KCRW On the Beat podcast is this:
feed://ax.phobos.apple.com.edgesuite.net/WebObjects/MZStore.woa/wa/podcastRSS?id =73331691
But what I want is to get the link (from within iTunes, not by visiting the web page) of the "Our Pop Stars Lead Us" episode, which is here:
http://66.186.18.80/podcast/mp3/ob/ob050907Afterthe_DelugeOur.mp3
See what I mean?