BSG did try soundless space scenes in the mini series, but the test audiences complained about it, so they changed to the muted noises. Anyway, for the most part I accept sound in space as artistic license. The only time sounds in space bothered me in anything is when the characters are in space and they actually react to the sounds. Like in Enterprise Minefield, Malcolm Reed is out on the hull when the Romulan ship decloaks behind him. He hears the sound of the ship decloaking, and turns around to look at it.