OK, this may seem stupid, but:
After re-importing and moving all my files with the "Classical" label last night, I am no longer able to play them. According to the Filename column in MC, they are all stored at Users/myname/Music/JRiver/Classical/Artist etc. But they won't play. Also, MC shows the right number of files in the Classical catalog at the bottom.
Going to Finder/Music/JRiver/Classical, all the folders are there (most likely from an earlier import), but they are empty. That is, the songs/files are missing.
I've tried using Import to get the files back, but it doesn't work. What should I do?
(All songs belonging to other genres show the same path, but play perfectly.)