need help in replacing sound files

[luigi90132]

I cant seem to find out how to replace the sound files in the luigi's mansion game 

[lmfinishgamer]

Because you can't. Well, at least, if you mean import custom sounds, then you can't do that as there's no tool that "repacks" the soundbanks as of now.
If you're talking about just replacing sounds already in the game, then just replace the BAS linker files scattered around the model archives (at least that's what I would recommend for a beginner). If it's unused, then have fun hex editing the two sound ID bytes for hours or even more.