PS2 IRX files help

[Maxpphire]

It's for the BeatmaniaIIDX games. Currently trying to worth with 4th style.

Einstein- How do I decompile this

Shade- Here have all 7 of them
https://www.dropbox.com/s/d4wm6zhljhwao1...N.IRX?dl=0
https://www.dropbox.com/s/pezr9zgpkowlk9...N.IRX?dl=0
https://www.dropbox.com/s/psc7zft9i207pk...D.IRX?dl=0
https://www.dropbox.com/s/f9wwlzm7tkcxo9...N.IRX?dl=0
https://www.dropbox.com/s/kqoa5eg810w00k...V.IRX?dl=0
https://www.dropbox.com/s/6rgo4p2nilmk8p...N.IRX?dl=0
https://www.dropbox.com/s/v9sjpqfgguf7lo...N.IRX?dl=0