There are a couple of settings on Stellar Wars for slightly different background sounds, as well (of course) as turning it off completely. My Stellar is set to the same sound as in the vid you posted, same as i remember it in the arcades. I know some people dont like the background sounds and turn them off in the settings. I like games with background sounds on, adds to the excitement  even though on all the Wms games, imo they are too loud and almost overshadow the other gameplay sounds... probably the reason most people turn them off come to think of it