I neither know, nor care about the legal issues. As a layman, I would think that unless there was a notorized piece of paper, any agreement would be worthless. As a trench fighter, I give the gal kudos, as she knew she had money in the bank when he gave her a copy of the tape. I would never have made the tape to start with - if more than 5 people on the planet knew my name. That's begging for trouble - but I'll guess HE wanted to show off to his version of drinking buddies, and she was smart enough to play him and file it for future investment. Now, he's more famous with more money, and everyone HAD forgotten about her.
Not now...