I've used MC for Windows since v.18 and have had the same complaint with each upgrade: the processing the new version applies to the library changes the tagging of my flac file's metadata. I haven't seen this addressed in the forums. The last file in an album's folder will have it's title attribute (and a couple other - memory needs refresh) changed so that it appears to be a separate album. Not every folder, but enough of them to make it very annoying. Maybe setting the library directories to read only is the work around? But, that shouldn't happen.
