Most files are compressed using yay; there's a large number of compressors and decompressors for this type.
The problem here is there's 7137 files across eight tables in this game. One table is nothing but palettes for images in another table, but it appears some are reused. You're going to need to write a file inserter to correct all the offsets for files that move when a compressed file is edited, plus alter the base offsets for each table and shift the music backward.
I'm in the middle of a translation and disassembling a partially dumped ROM right now or I'd offer to help. Sorry.
Here is a filetable though:http://pastebin.com/Vt6SxCD3