Question, did those Magnolias put in a silencer for those wanting to back up their movie?
No. They don't do that sort of thing.
Are you trying to play the movie from the hard drive, or are you burning to a disk and trying to play on a stand alone player?
If you are playing it on the computer what media player are you using? If you don't have it, try VLC on the copy you have ripped to the hard drive. www.videolan.org
You can open the dvd on the hard drive with DVDShrink, just to examine which audio streams are included, and what type of audio they are.
Both VLC and DVDShrink are free. You can download DVDShrink here: http://www.videohelp.com/tools/DVD_Shrink