Tested with “The Beatles - Abbey Road”, I’ve used Ogg Vorbis, Mp3 and FLAC.
Ogg Vorbis: Tracks under Album are NOT sorted by ID3 track number, FLAC and Mp3 are ok.
Same solution with “Musik” and “SD-Card”.
I tried a Tool named “DriveSort” for FAT32 too, same result (Folder in DriveSort shows sorted).
Ogg Vorbis doesn’t sort.
Very bad, because of Gapless Playback (which could work with FLAC ore Ogg).
But Gapeless Playback does’nt work good at this time with Sandisk Clip Jam (about 0.3 sec. silence). :-((
I hope for solution.