Working great so far, but one thing I do wonder is, is there any way to filter those backgrounds? The original PSX backgrounds look pretty bad in full screen.
I think someone in this thread mentioned using a CRT filter, which I imagine is applied as a post-processing file. Perhaps they can point you in the right direction? I looked about but couldn't find concrete stuff except for this (first link is dead, 2nd is alive):
https://steamcommunity.com/app/39140/discussions/0/152393186500642113/***
As for the audio, both scenes use this instruction:
Cloud's Mom's House (flashback scene when Cloud is sleeping in Aeris' house):
AKAO Fade music volume (param1=90, param2=127, param3=63, param4=0, param5=0)
Issue: When screen is black, this is first thing to get executed - music cuts immediately instead of fades, clips of song will pop through unexpectedly during silence, leaves audio muted (both bgm and sfx) until you leave Aeris' house where BGM will fade in erratically.
Bugenhagen Observatory
AKAO Fade music volume (param1=255, param2=85, param3=0, param4=0, param5=0)
Issue: After pressing switch, this is called; music cuts and will pop in and out, elevator SFX is also off. Corrects in time for the next scene.