Oh dear.
When I saw that you could change folder play through, I was happy. Because I prefer to play an album and have the music stop at the end, and let the player switch off automatically. But now I've found that the play through folder feature doesn't work! Instead of stopping after the last song, it just loops back and starts the same folder again! So totally useless for my needs.
Sigh....one step forward, one step back.
@FiiO could you please make another firmware that fixes these little problems, please!