I’m not entirely sure what Holophonic Sound is… or at least I wasn’t… and this site really doesn’t fill in any of the blanks so before you head there, here’s the explanation I got from Wikipedia:
Wave field synthesis (WFS) is a spatial audio rendering technique, characterized by creation of virtual acoustic environments. It produces “artificial” wave fronts synthesized by a large number of individually driven speakers. Such wave fronts seem to originate from a virtual starting point, the virtual source or notional source. Contrary to traditional spatialization techniques such as stereo or surround sound, the localization of virtual sources in WFS does not depend on or change with the listener’s position.
Now that we’re versed, here’s some holophonic sound in action… it “recommends” that you where headphones to further the effect… This is more than a recommendation: do it! It makes the experience… now go, listen: