I've an odd problem that has occurred on (fortunately only) a few MP3 files. Some have been corrupted such that the music plays fine but the following items have disappeared from the file headers/tags:
Also the genre has been changed to "Other" - this was how I spotted the problem. Anything altered in the usual tags, I can change back with Mp3Tag. But the four fields above I can't figure out how to alter.
The corruption occurred some time before the oldest backup that I have so I can't recover the files from there.
This isn't critical and I could re-rip the CDs but I'm curious to know if I can change these fields somehow.