Bill Kearney has written an XFML tool for Radio.
It exports a complete XFML map of your posted items. It automatically pulls out the category data as well as month, year and day info. Bill writes: “I’ve a few options on it that aren’t enabled pending some further testing. I’m more than willing to listen to feedback on it.”
To install, just close Radio, drop the file in your radio>tools folder and restart.