I don't claim to know much about the mpvie business but I know this, if I planned to make a movie about, say, Donovon, one of the very first things I'd do, long before casting, actually, probably before raising money, I would make absolutely certain that I had a contract signed by Donovon to use his songs in the movie. Because, kinda obviously, if I didn't and Donovon said no, .I wouldn't have much of a movie on my hands.
According to contactmusicc, Jimi's sister Jani issued a statement:Last month, Jimi's sister Janie – who run's his estate, Experience Hendrix LLC – revealed she would not give her permission to allow his music to be used in the movie.''It has [been made]known many times in the past that no such film, were it to include original music or copyrights created by Jimi Hendrix, can be undertaken without the estates full participation.''

