Thanks for the response, but can someone tell me what I've been trying to know all along; If a rating is given in MB, does the rating (stars) in the file change? Windows -> explorer -> properties -> details -> rating?
The ratings of MB are stored in the files but I don't notice any change here.
I'll just throw in my 2 cents.
For m4a files, the rating is stored in 'rate' tag, and Windows Explorer doesn't pick it up (i.e., shows up as 0 stars).
For mp3 files, the rating is stored in 'popm' tag, which Windows Explorer does pick up.
On my Android phone, GMMP is able to show the correct rating regardless the format.