How to set podcast tags for large collection of pdocasts?

How can I update a large set of podcasts downloaded outside of itunes to correctly catagorize when adding to itunes?

I have the details on the podcasts from the source's website, and can convert the data extracted from the html to whatever format mp3tag could use, but I don't see any import function. (Something akin to the export function but would apply the extended tags.)


Converter/Textfile - Tag.