It always makes me feel good when science catches up to science fiction. Or, maybe the past. Both have had their elements of using unseen forces -- in this case, sound -- to manipulate and move objects. I remember reading/watching a discussion about using sound to transport stones (think pyramids...). Experiments like the below just make that seem even more realistic.
http://www.csmonitor.com/Science/2015/1028/How-the-sonic-tractor-beam-levitates-and-manipulates-objects
