MC11.1 saves ratings in an ID3v2.3 custom comment field named as
COMM Media Jukebox: Rating.
This was changed in MC12 to make it compatible with WMP and some other programs. Currently the ratings are saved in the
POPM (aka Popularimeter) ID3v2.3 field. However, MC12 correctly reads the old Rating comment field and on the next tag update writes the info to the new field.
You can check the actual physical file tags by displaying the tag dump:
MC11.1, Action Window > File Properties > File Type Info
- look for
COMM (Rating):MC12, Action Window > Tag > Format (click the field for detailed info display)
- look for
COMM (Rating): and
POPM: <unknown data type> after a tag update
Edit
A question to Matt: Should MC show the POPM value instead of <unknown data type> ?
Edit 2
JLee, I removed a question which you already answered. Somehow I didn't fully read your post.