Good info.
I am loving the game much more now that the music is more epic than before.
I just tested to see if i could substitute the music (the midi files) with others so that I could hypothetically have a regular boss battle run the music "J-E-N-O-V-A" in its place.
It worked
So after backing up all of the files, I picked out some of my personal favorite choices for different versions of the same music.
Like the two different versions of "one-winged angel", there was one I liked, and one I didn't.
So I swapped the names to make the one I liked play during the safer sephiroth battle.
And in case it somehow messes up the game, I (as always) have my entire FF7 game backed up in case of a crash.