It’s one of the only changes in the special editions that I like, I think it can just be a simple edit to the audio track. I tried doing it myself but I couldn’t isolate the voices in the celebration scene so I could only let the music play but with no voices on top which feels weird to watch. I think someone could do it with a 5.1 mix, those usually have their own track for characters talking.
Well done. I will disengage self-destruct initiative.