I have playlists like this in my top level:

Soundtracks
Various
Comedy
singles
A
B
C
..
X
Y
Z

All full albums are then below the single letters sorted by artist first. i.e. like

A
|
+-> Ash
....|
....+-> 1977

When I upgraded to alpha9 all my single letter playlists disappeared. Down, Down, Down only queued songs in the remaining playlists that I could see.

Downgrading to alpha8 and all the single letter playlists magically reappeared without any syncing.
_________________________
Christian
#40104192 120Gb (no longer in my E36 M3, won't fit the E46 M3)