Joey, what the hell are you on? Crack again?
FF9's data is not encoded in any way, at least no more than any other PSX game. Much like Xenogears or Chrono Cross, the data files are not in the CDFS file index, so they won't show up in Windows Explorer. FF9's CDFS index does have a FF9.IMG file that spans across all the data files, so it's kind of like a cross-over between the Xenogears file system and a normal, visible system.
But the data itself is very much accessible. Emus have trouble running it because it uses advanced PSX coding (as in *programming*), not because the data is encoded or unreachable. As soon as I got FF9, I extracted all the TetraMaster graphics, so that pretty much proves my point. I probably was the first to do so too

(I believe FFOnline uses the hacked-out graphics in their FF9 card reference page, btw)