OK, and here I thought everybody had a Library folder, haha.. AFAIK playlists are not included by the offered MusicBee backup options. No big deal, just copy/paste them to the back up location you want. I use the Portable version so all I need to do is copy its one "MusicBee" folder somewhere and I have the settings, player, playlists, library files, the whole dang thing backed up two clicks.