remove from single playlist issues

[Prime9]

Maybe I'm just being really dense, but I don't seem to be able to do this...

I'm just starting to move my media library over from basic file/folder organisation into BSplayer, and setting up playlists like:

Favourites
Game soundtracks
Classical
...
etc
(I'm a fan of excessive sub-divisions :P)

however I don't seem to have any way to remove an item from just one playlist? right-clicking on the file and hitting "remove" removes it from ALL playlists. Only tried this with bsplayer 2.25/2.26, but it works the same in both.

arguably Some of the divisions should be done based on the files meta-data, but the problem still stands :P.


Maybe I've just missed the blindingly obvious button to do exactly this... but it feels like an easy thing that should exist.

thanks

(as already said, I'm on the latest bsplayer, vista x32 if that makes any difference, but It doesn't seem like a system-setup issue)