For some time now, I’ve been applying multiple genres to my collection, using “;” as the separator. This seemed to be going well, though I then realised that this approach doesn't work for m4a files when using MB. Of course, I could overcome this issue by converting these rogue m4a files to something like Ogg Vorbis, but I’ve just established that mp3tag can assign multiple genres to them with the “\\” separator. Am I missing a trick with MB??