I've been trying to subscribe to a specific podcast (http://skepticality.libsyn.com/rss/) for a while, and it consistently fails with a "No feed available for this URL." NB: this URL is what is referenced from the author's site as well as on the libsyn.com site.

I loaded Beta9, and found the same error.

I started testing some other libsyn.com podcasts, and found the same errors. After a little more testing, I got lazy and left off the trailing slash (e.g., http://popsci.libsyn.com/rss) and it worked!

This behavior appears to be consistent for this site and Canola Beta9.

So, to summarize, a podcast from libsyn.com that ends with "...com/rss/" will fail, while the same URL without the trailing slash, "...com/rss", works.

Would you consider it a bug? It sure is annoying!