I can open aifc files in audacity, but if I try to set “always open with this application”, when double click on an aifc generated by Quicktime, I am told that the aifc file is from an unrecognzed developer.
Does anyone know how to default aifc (and other audio files) to audacity in El Capitan?
The best way is to do without opening the file first time around. Right-click or CONTROL-click over Audacity.app (wherever you installed it) and choose “Open”. In the dialogue that appears, choose “Open”.