def __init__(self, appdata, cnf={}):
self.config = RIFF_Config()
config_file = os.path.join(appdata.app_config_dir, 'riff_config.xml')
self.config.load(config_file)
self.config.update(cnf)
self.appdata = appdata
self.loader = RIFF_Loader()
self.saver = RIFF_Saver()
self.new()
