- Add music_tools lib,

- Migrate album_metadata_load .

bin/album_convert

@@ -113,7 +113,7 @@ ac_args_parse()
 
 	    #   
 	    --)                                                                               shift;  break;;
-	    *) echo "args_parse internal error [$1] !"; exit 1;;
+	    *) echo "args_parse internal error [$1] !";                                               exit 1;;
 	esac
     done