Just so people know, the error was that I needed to put in the sourcecoast ID.
I would recommend that the error text at the bottom of the autotune page be more obvious. Maybe it should be in red or have a background color like other error messages. To me they just looked like notes, not error messages.
Sorry for the confusion. Autotune is going through a big overhaul right now for the v6.1 release, due out in June. We'll definitely keep your feedback in mind as we try to add more features and make it easier to use.