is there an easy way to extract the audio and substitute it with a NO BASS version?

hello,

i was wondering if anyone knows if there is a way to take a PSARC file and extract the audio file from it?

i wanted to do some NO BASS versions of some of the cdlc files that i have using MVSEP.com. so i would want to extract the audio from the PSARC file, feed that file into MVSEP.com to get the stems, and use audacity to export a version of the song with no bass, and then re-insert that no bass version back into the cdlc file and then export a new PSARC file. (i would ensure the length of the song would remain the same, as well as the file format, etc.)

i hope that makes sense!

thanks,
derek...