def load_song_db(song_db_loc, read_attribs=True):
unpickler = Unpickler(open(song_db_loc,'rb'))
tag_list = []
attrib_key_dict,attrib_dict = _read_attribs(unpickler,read_attribs)
try:
while True:
tag_list.append(unpickler.load())
except EOFError:
pass
if attrib_key_dict=={}:
attrib_key_dict,attrib_dict = _get_tag_attribs(tag_list)
return tag_list,attrib_key_dict,attrib_dict
