(Corrected - sorry about the missing types ... I didn't read, what I've typed before.
)
After playing a file or track, its folder can't be immediatly deleted.
If I don't like the song anymore, it's principially one of the most natural things for me, to delete it, either while listening or immediatly after listening.
So this is not possible. >
I first have to start another song in another folder or I have to restart MusicBee.
Another Interesting thing is, if I do a volume analysis, the song is released and I can delete it then.
I think, there's a possibility for a workaround for you. On Operations for deleting a folder, the software should first check, whether the folder contains an open file and then stop the access to it.
This will also handle the problem, that after a such operation a folder or file disappears from MusiBee, but not from the file system ... and rises up again, the next time you start MusicBee.