Interesting, but I find it hard to believe they would try something like that, especially after all the original music that they'd done for previous movies. Besides, I prefer original music over trying to shoehorn existing music into a movie.
I thought it was pretty weird, too. I don't personally own the soundtrack, but according to Memory Alpha (which certainly isn't the end-all-be-all haha), the liner notes to the soundtrack revealed that piece of information. Though, I agree that original music is always great