After having "upgraded" to iTunes 10.4.0.80 last week, I'm finding that iTunes can't or won't read sorting tags (ARTISTSORT, ALBUMARTISTSORT, ALBUMSORT, etc).
Before adding music to iTunes, I run the tracks through MP3TAG to ensure that the tags are synched with MusicBrainz and/or Discogs. In the past, I've had no issues with these tags being read properly by iTunes, but since I upgraded, I can't manage to make them read.
Seeing the problem on newly imported files, I went ahead and looked at the files in MP3TAG again. The tags were as I wanted them, it's just that iTunes wasn't seeing them. As all of the files I've added in the last week were ALAC, I went ahead and used the Optimize MP4 command, but got nothing on the iTunes side.
I've tried all the "normal" iTunes side tricks to force iTunes to look at the tags, including opening "Get Info" (nothing), resetting play count (nothing again) and consolidating files (again, nothing).
I've looked in the forums here and elsewhere to see if there's a widely reported change that could account for this, but I've seen nothing. I thought we'd finally gotten past these issues with last year's changes to the Artist Sort tags, but here we are...
Any suggestions, advice, etc would be hugely appreciated.
Of course, if I'm an idiot and missing something obvious, please point that out as well.