I don't mean to give negative feedback, as I don't consider myself a full-blown expert with Python/ML, however, for someone with passing experience, it fails out of the box for me, with and without the typically required 16Hz bit rate audio files (of various codecs/formats).

Was really hoping it would be a quick, brilliant solution to something I'm working on now, perhaps I'll dig in and invest in it, but I'm not sure I have the luxury right now to do the exploratory work... Hope someone else has better luck than I!