[Plextalk] Can't see a way to successfully get AppleVis podcasts onto PlexTalk

has anyone tried getting the AppleVis podcasts, from www.applevis.com/podcasts, etc, onto the PlexTalk (Pocket)? there is a formatting problem at least: the address doesn't end in .xml - for example. So I think you have to download the individual podcast mp3 files on to it. It's a pity the plexTalk is so fussy about formatting that it won't accept.