Hacking Need help with game files

[KujiKita]

I have some files from Project Diva X. Can you help me to decode them? It would be nice if you write to me how and what can decode. Thank you very much in advance.

Files: .a3da, .aec, .aei, .bin, .blt, .bon, .cat, .cct, .dex, .dft, .drs, .dve, .fnm,
.fog, .fp, .lit, .mhd, .mot, .osp, .pvbr, .pvsc, .rmsc, .spi, .spr, .stg, .tes, .vag, .vp
Headers: A3DA, AETC, AEDB, header unknown, BLMT, BONE, CABT, CCRT, EXPC, DOFT, DVRS, DVEF,
FONM, FOGC, GXP, LITC, MMMH, MOTC, SKPC, PVBR, PVSR, RMSC, SPDB, SPRC, STGC, TESC, VAGp, GXP

P.s. some of vag files is normal, but other some distorted. Normal files are there so, for example, how it should sound.

Archive with files -not attached-

 

[Issac]

Removed the attached archive since it contains copyrighted content. Feel free to ask for help (as in information about) decoding them and such, but you can't share the files here.