iTunes 12.2 Changes Track Names, Ruins my Library
Right before my eyes. Here is a description of the first of many instances: on one of my Macs I have a playlist that includes "Both Sides Now" by
Joni Mitchell (may she fully recovery from her illness). I double clicked to play the song and before my eyes its name in the playlist changed to "Violin Sonata No. 9 in A Major, Op. 5, No. 9: II. Giga - Allegro," by Arcangelo Corelli, a piece of music that I have in another playlist. But the song that played was the right one. "Get info" shows info for the Corelli work, but with the Joni Mitchell album art.
I am also finding songs in playlists that I didn't put there--not intentionally, not by accident. Patsy Cline in a classical trumpet playlist, e.g. I double-clicked it and its name changed to a trumpet work by Purcell, but the song that played was by Patsy Cline. A cello concerto appears in my trumpet playlist, but a trumpet work plays when I double-click.
In all instances, "Show in Finder" reveals the music as a duplicate in the same folder as the real version of the song.
This has happened over and over again since I downloaded iTunes 12.2: My iTunes library -- 10,000 songs -- is in ruins.
Unfortunately, I did not turn of my SuperDuper backups when I first discovered the error and began investigating. Thus, my backup copies of iTunes Library.itl are corrupt, as well.
Ideas!? Thanks!
Final Cut Pro X, OS X Yosemite (10.10), Seven Macs (five modern).