thx alot, i think now i got the point.
but what's a bit of a trap is, that all top directories are also included in this list, i.e. a, b, c, d, .....
so this playlist makes mp3tag to load all subdirectories also
but if i switch off subdirectories in the options then it works .....
2morrow i'll check the rest, but for this, THANK YOU A LOT, i really know how much programming and debugging effort this must be.
cheers
p.
ps. thx for adding the detailed description to the original post of your source code of the export script to create the playlist.