Originally posted by: taylorjohn21
I have the original sound track on an old tape

Not "the original sound track" but instead one of three original sound tracks. All three are original; all three were heard in theaters in 1977.
Depending on which theater you attended, you might have heard any of the three.

The Dolby samples you heard on the other web page are from the original 35mm stereo mix.

In addition the the three original sound tracks (35mm mono, 35mm stereo, 70mm surround) there have been four remixes done for home video releases in 1985, 1993, 1997 and 2004.
Out of the 7 total mixes (3 original + 4 remixes,) 6 of them (except the original mono) have the voice you don't like.
Chances are good the voice you don't like is on the DVD to be released next Tuesday.

Belbucus (the fellow doing the mono mix restoration) might be very interested to hear a copy of your tape !