How to change iTunes metadata on PC? I'm looking for a windows compatible program that will change iTunes metadata. I'm interested in changing tags that iTunes doesn't let me change, such as making a little HD flag appear next to the film and changing the media kind with all options. 

All the programs are for Mac only, but the functionality I seek is something like Subler for PC.
If they are ID3 tags, you can change them with exiftool (perl).

mutagen (Python) can also change them.