With all the times I asked posts like this I am sure that it is possible to correlate my person between different sites even if I used different usernames. How many people can share the same 3 games?

Yes, random rippers preferences. The issue is that if you modify the file you lost traceability. And if you want to share the same files with a group of people you want the files to be static. The information can be out of the audio file, the sidecard I mentioned before. In photography it is used xmp format for sidecar. It seems that could be used this format for music too, I have to check it.

Yes, I am aware of hard links. But renaming is not the main issue. The main issue is retagging. Thanks anyway.

I stopped to retag and rename music files. Right now I prefer them to be as original as possible because preservation reasons. I shoud look for an alternative using sidecar files. In the past I used Musicbrainz Picard.