It appears we're having some issues on file downloads. At least in Firefox and the RSS feeds, the episodes are hitting a redirect loop; I've contacted LibSyn about this, and hope to have some resolution soon.
If you can't wait for your episodes, though, I have found that if you deign to open Internet Explorer, you can right click-save as and grab the files. I haven't tried Safari or other browsers, so I don't know how they're reacting.
If it's not cleared up by the time I get home from work tomorrow, I'll be sure to make the most recent episode available through Ourmedia.
Thanks, and sorry for the problem!