How do I tell iTunes that a podcast file is corrupted and won't download?

I'm just trying to listen to the latest New Yorker: Political Scene podcast, but it won't play on any device or download to my Mac. All other podcasts play just fine, even earlier Political Scene podcasts. It's just this one, from Saturday, Sep 28. All I want to do is let The New Yorker and the iTunes store know, so they can correct the problem.