I have tried four different Sticks, all formatted FAT 32 with between 1000 and 4000 songs and no sub-directories. I started shuffle and the songs played, but there was no indexing and less than ten percent of the recorded songs played before they would start over. How do I play all the songs on the drive?
I have a 256g drive with folders and sub folders and play it all the time. I do not shuffle I usually play an album through. I have not seen any problems
The Infotainment system can't see more than two folders deep on a flash drive. If your directory structure is (for example) Rock>Bob Dylan>Basement Tapes>wheels_on_fire.mp3 you won't hear any music. If the directory is Bob Dylan>Basement Tapes>wheels_on_fire.mp3 or Basement Tapes>wheels_on_fire.mp3 you will hear the music because there are 2 or less folders. Also, .m4a files are unrecognized by this car.
In my case the files were all MP3's loaded directly to the root directory, but as I said, all the songs did not play. I made a new flash drive a couple of days ago. This time I made a separate directory for each artist followed by the songs. Of course it plays using shuffle, but I don't know yet if all the songs will play.