It used to be that you could store an entire playlist and the tracks as private by uploading and marking the uploaded playlist "private." If you changed the playlist to "public" in the future, the software would ask if you wanted to make all tracks public, too. This was very useful to me in holding stuff back until an online "release date" occurred. Now, if you make a playlist public, the tracks remain private, and you can't convert them other than by individually editing the tracks outside of the playlist window. This is very inefficient. Please bring the old feature back!