This is Huffduffer. Needless to say, I have started using it and found it to be extremely easy to use - especially with a plug-in in my browser that allows to right-click a URL and choose to insert the file into a feed. I have chosen a number of lecture series that are on-line, but not syndicated and have turned them to feeds. J. Drabinski's lecture series about Husserl (feed) and about Heidegger (feed) - found through Baxter Wood. The Open Yale course about the Hebrew Bible by Christina Hayes that was not syndicated, when all the other Yale courses were. I devised a feed that contains all but the 15th lecture - for some reason Huffduffer cannot deal with that one. And lastly I made a feed for the Marathan Interview with Herman Bianchi (Dutch).
I will use Huffduffer to arrange special feeds for readers (come, come with the requests). You can do it yourself as well and I will be happy to publish and review when relevant.