Almost certainly this was just some production screwup. Someone at Sony thought the the license was taken care, because of that they stopped calling back and the music never got licensed.
What probably happened was the music supervisor was working on getting the clearance right up until the day of the hack, and he hasn't been able to get onto his computer since -- all of the PCs at Sony have been down ever since the Day because they're doing a huge forensic audit. And then a week went by and Sony announced they weren't going to release the movie, and the music sup just forgot about locking down the last licensing deal since it seemed like a dead letter.
And then Sony announced they were going to screen the movie with one days notice and they rushed the due-diligence.
I don't think they're related, the film was almost ready to release when the hack occurred meaning they had a final or very nearly final cut. I don't see Sony putting themselves in the position of having not-yet licensed music in the final cut, that gives the publisher far too much leverage when negotiating terms.