Situation: I got new car that has a 700-folder limit for it USB music system. I originally had all of my music (17,000+ files - wma, mp3, and m4a) organized in folders by Artist > Album > Song. Since this put e way beyond the folder limit, I just moved all files into the Root directory - this worked but I really wanted some organization, so I used MB Picard to reorganize all songs into their applicable Artist folders.
The only settings I changed in MB Picard were the organization structure (just Artist folder) and to move files to a new directory after updating. Otherwise I just let Picard do its thing, updating tags and album art as it went along.
After the file updates, the car system is apparently not happy with something, as it won’t load the files, and even the non-USB music sources get screwed up when the USB drive is inserted (sound drops, can’t switch between sources, etc.). Remove the USB and all goes back to normal.
So with some playing around, it appears that the .m4a files appear to be the culprit. If I just have wma and/or mp3 files on the USB drive, all works. Adding .m4a files causes the issues mentioned above. All of these files worked fine before the re-org/tagging by Picard, so I’m just trying to figure out what may have changed. (I have no problem playing the m4a files on my computer, so the file itself isn’t truly corrupted.)
I realize this may be too quirky or specific to resolve, but if anyone has had any similar experiences, I’d be very grateful to hear!