There is no such entry in the database
OPML is an interchange format used commonly in the podcast and videoblog worlds. Whatever podcatcher you use, chances are you can import and export your subscriptions as OPML. In fact, now you can even do it from iTunes. You can use it as a shortcut to export from your tool and import it here, or you can export your ratings and/or predictions and import them in your tool. The possibilities are endless.
You can also subscribe to your predictions as an RSS feed