It appears some bad decisions were made concerning the audio. I have to thank a poster on DVD File's Forum, which is temporarily down, for this news. They provided a link to John William's Fan Network Forum here. The thread on that forum has several sound clips from both the Original and 2004 releases. The changes really stink in my opinion. Some sound effects and music are omitted here and there. They also provide a comparison that illustrates what the reviews have been saying about the varying audio quality in ANH.