If it were an art then it wouldn't mean anything in regards to the assassination. You can't base a conclusion on someone's art.
It isn't though. Scientists just don't always agree. In this case we are left with a handful of people defending a theory that they had a part in promoting, against everyone else. There is no valid acoustic evidence of gunshots in Dealey Plaza.
Science is about proof. If a proof cannot be repeated with the same results by credible men (and all the acoustic people for each side are credible) it means the science (in its forensic applications at least) is not dependable.