I have suggestions for comparing the contents of files and finding
duplicates, but I don't know how to handle the files where you
changed the tags.
I use Super Flexible File Synchronizer (SFFS). I don't think it is
available any more. The updated program is Syncovery for Windows, at:
I haven't looked to see if Syncovery is a superset of SFFS, but
even if Syncovery is not a superset it should be able to compare
two trees and pause with an editable list of different files. When
it pauses you can select other options for the merge operation rather
than just using the newer version. You can take that opportunity
to rename files perhaps get multiple versions of the same file
in the same directory.
SFFS can somewhat handle moved and renamed files, but it doesn't
catch all of the moves.
I use "Find Duplicate Files" in FolderMatch from www.foldermatch.com
to find all sets of renamed and moved files that match.
Google shows various mp3 tag editors various articles about tag
random article from 2009:
I didn't look for any more tag editors since I don't have the time
to evaluate them; I only included mention of tag editors in this
post to show some of the issues that need to be handled.
The first entry in the Life Hacker article was for TuneUp, which seems
to now be at:
Clicking on "DEDUPER" goes to:
"Using the same acoustic fingerprinting technology that powers other
parts of TuneUp, DeDuper will hunt down all of the duplicate tracks
in your music collection and display them for you in one
It seems like this can be used to handle the cases where you only
changed the tags.
I don't know what to do for files were you edited the tags and the
Tuneup is about US$50 which is fine, but only
"can be moved to different 5 times"
so I wouldn't use it if there were choices.
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