Here’s an updated clip of the SKB explosion. NeverarGreat has done more to pan the sound effects across the channels, to sound less centralized. He’s addressed the brief dip in the wind sound effect right as the music changes, as MalaStrana noted. As before, the audio during Rey and Leia’s hug very gradually fades from a stereo upmix back into the 5.1 soundtrack. Similarly, I’ve now very gradually crossfaded the audio in the two scenes prior to the Falcon scene from 5.1 to stereo, in preparation for the essentially-stereo SKB explosion sequence. It’d be a little mucky for a professional job, but it does help me ears better accommodate the new audio.
https://mega.nz/#!KZIFQLhS!2RjCIk8OTxvkInUT3wsYs5sUMmvvd3tfAfyIEZ4rrDY
I’ve only listened to this in stereo, where it mostly sounds good, but it would be better to have a more proper 5.1 mix with dialogue only in the center channel (any voice echoes/reverb would be in the surround though). As you have it now vocals become too loud when they are in every channel so please use 5.1 sound for those scenes.
If there is only stereo sound available (as in the deleted scenes for example) you can use audio editing software to extract the centered audio information from the stereo sound which makes for a pretty good center channel, and a stereo file with extracted center can then be used for front and back channels. If there is a separate music track then you would use mostly music for the back channels and music plus other sounds in the front.