I solved this problem in my 2018 Mustang by editing the song titles in each file on the thumb drive and placing an alphabetic prefix in front of each title. This way, you can arrange the playing order in any way you desire. This can easily be done in Windows Explorer. "Song 1" becomes "A - Song 1". "Song 2" becomes "B - Song 2". "Song 3" becomes "C - Song 3", etc.