Here, Nev, here is that scene with 5.1 audio. It’s a first attempt, and so if you have feedback and are interested in making it better, let me know. The sync is not identical to the clip you provided, so you are aware.
https://drive.google.com/drive/folders/1zZuEYos__YBJMY8rSfjggjOS-02Hxr3n?usp=share_link
Hmm, it sounds like the central channel is missing.
Other than that, it sounds good 😉
Try the mkv I just added. The mov file is for editing rather than viewing, with six separate mono tracks that together comprise the 5.1.
There are certainly flaws here, so again, if this is something you want to develop further let me know.
There are definitely bits missing here, but I think the biggest issue with this concept is what you said - Han’s voice seems to come out of nowhere. This, however, isn’t the fault of the scene, but the setup earlier in the film.
I’ve been thinking about it a bit, and can see one way to set up Han’s memory organically. We already have one piece. When Kylo speaks to Rey during the festival, she tells him that she can see the cracks in his mask, and that he is haunted by his father. What we really need is a scene that embellishes that, something that would go between that scene and the appearance of Han’s memory exactly one hour later in the film so that we don’t forget that the subplot exists.
I suggest moving two scenes: the one where Kylo communes with Vader’s mask, and the scene where masked Kylo stands in the destroyer hallway and talks to Palpatine. The Vader mask scene could take the place of the hallway talk, happening right after the Falcon is towed into the Star Destroyer. Overlay Palpatine’s voice on the scene so it is clear that Kylo is using the mask as a conduit to speak to Palpatine, and only for this purpose, since he now knows that every other voice was just Palpatine in disguise. Kylo’s voice would have to be changed since he isn’t wearing his mask here, but we’ve already proven that it’s possible and there’s no lip matching required.
The hallway scene can now go several different places in the film, including back where it was in the theatrical version. Since Palpatine’s dialogue is no longer there, it’s a blank slate to fill with whatever troubled thoughts Kylo would have, so we could put Han’s voice into his head, or even place Kylo’s whole vision here, though it would probably be stronger with just Han’s voice. Here, his line ‘Take off that mask…you don’t need it’ actually makes sense, as he’s, you know, wearing the same mask from TFA. If it does go back where it was in the theatrical version, it would form a nice parallel with Rey’s scene where she vows to kill Palpatine. Just as Rey is falling into the darkness, Kylo is tempted by the light. It is noticeable that the next time we see Kylo, he has no mask and presumably didn’t take it with him. So Han’s voice is already having an effect on him. We are seeing the scene from TFA play out again, this time across several scenes and with real progression for Ben’s character.
This scene switcharoo has another benefit. Now that Vader’s mask scene has moved away from the beginning of the film, Kylo’s scene progression goes directly from meeting Palpatine to reforging his mask. This ties directly into the commands of Palpatine, which are to ‘kill the girl, end the Jedi, and become what your grandfather, Vader, could not.’ Therefore, he is recommitted in this moment to becoming like Vader without the confusion of consulting Vader’s lying mask.
With this reshuffling, we might lose Kylo’s vision, but I would argue that Rey’s vision is strengthened by being the only one in the film, and having a scene where Han speaks to Kylo would serve the purpose of Kylo’s vision and more. The only loss in removing that early vision is that now there is no indication that Kylo is haunted before Rey brings it up during the festival, and unfortunately there is no early scene of Kylo which would really work to establish this. Unless…
Imagine altering the final paragraph of the crawl to say: "Haunted by the ghosts of his past, Supreme Leader Kylo Ren rages in search of a hidden power that could ensure his victory…
Pan down to Mustafar, where we see Ren carving his way through his enemies. With each one that falls, we hear the sounds of his past coming back to haunt him. The voices of Luke on that fateful night, of Rey in the forest, of Snoke on his throne, which changes to the laughter of Palpatine. He sees the Wayfinder. With this, Mustafar Minute actually pulls its weight.
So to recap, Kylo now has a whole arc established in minute 1 and developed at 3, 23, 65, 80, and 83 minutes into the film.