I have a network mount (cifs) configured as a source.
Adding to the queue a track with a double quote ( " i.e. ascii 0x22 ) in the file name has no effect.
The track doesn't play, the playback screen shows empty title.
Renaming the file by replacing double quotes with simple quotes fixed the issue for me.
Note that double quotes in the tags are handled fine, and correctly displayed as double quotes.
So just causing issue in the file name as far as I can see.
-- mars68