The New Yorker has just published the best telling yet of the Hatto saga, although it's remarkable how the author (Mark Singer) is simultaneously aware of Barrington-Coupe's (Hatto's widower) incapacity to tell the truth and yet openly drawn in by the con man's charm. It would seem that Barrington-Coupe is a supremely gifted manipulator.
In the end, I still haven't gotten my question answered about how the telltale information got plugged into iTunes (I don't believe iTunes made the match just on timings), but maybe that's a secret that won't get out. Also, reading the article absolutely confirms that a movie must be made out of this story. Maybe even an opera, with Barrington-Coupe as a Dulcamara-like buffo role.
And remember, you can read that lengthy New Yorker article, or you can get all you need to know about Hatto in six stylish sonnets.
UPDATE: More comments in the comments.