The movie Shane was made in much the same way, only on purpose..
The director wanted to surprise the viewers and get them involved in the movie.. So, he had the sound track altered to play much louder ever time a gun was fired.. That was the plan anyway..
The movie premiered in London.. After the showing the director ran up to the control both, wanting to know why his movie soundtrack had not played out as planned ??
Get this, the projectionist had been riding the volume control the entire movie, complaining to the director how badly it had been recorded !
He had prescreened the movie and took it upon himself to 'fix' the glaring oversite on the fly..
Best laid plans of mice and men, eh ? hahaha..
You can hear this for yourself, as the dvd has the soundtrack as it was originally recorded.. While not 5.1 etc, it's still a great movie to watch, AND listen to :-)


LFE ! The rest is just details..