Used internally when loading playlists. You should probably use 
        load_objects().

def load_playlist(self, loc, title):
        '''
        Used internally when loading playlists. You should probably use 
        load_objects().
        '''
        lines = [l.strip() for l in open(loc).readlines()]
        self.playlists.setdefault(title, [])
        self.playlists[title].append(Playlist(lines, True))