Way to make all playlists NOT visible to others

[pat58]

As far as I can tell, there is not a way to make all playlists NOT visible to other users withtout unchecking the box for each playlist. Is this correct?
Linux Mint 17.1
Subsonic 5.0

[pat58]

What I mean to say is, is there a way to make all playlists (I have many) not visible to others (say, after importing a bunch of playlists into subsonic) in one fell swoop instead of going into each to uncheck the "Make this playlist visible to other users" box?