This version fixes a bug reported by Brian, who gets my thanks.
This bug blocked the recursive save of the root folder to one level (just the root folder), but did not happen when saving any other folder.
Since I was once more in the sources, I brought some changes to the automatic save of the playlist mode, which is triggered after each drag-n-drop operation
when that option is checked. From now on, this automatic save will no longer care if the subfolders save option is active. In effect, it makes the playlist mode
much faster, since it only saves what has just changed, not the whole directory tree from where we made the change.
This was what made the playlist mode so slow when I just moved one album before another on the 2GB SD Card of my Sony-Ericsson K750i.