Soundtrack Change

I am working on a mod that changes the soundtrack to the game. Not only for boss fights, but some ambience music. I decided to go with a whole new licensed soundtrack, although "Scrape" by Blue Stahli and "Switchback (Detroit Remix '00) will remain, as I like those songs

In Dead Rising 2, vocal tracks will play, and once the vocal track is over, an intrumental version will play, I am changing both songs to something different (Scrape and Switchback's instrumental tracks will also change.

Right now I am having a bit of difficulty as I 1. Have the Steam version and 2. the sound files are in odd formats. All instrumental songs are in a .adw format, which is like a .wav, and vocal tracks are in .xwma format, which is unplayable. I am working around that but assistance will make this mod come alot quicker.

Boss Tracks:
TWINS
"Willies"
by Lockjaw

SLAPPY
"In Ashes They Shall Reap"
by Hatebreed

POSTMAN
"Into Tomorrow"
by Stereocell

CHEF ANTOINE (spelled that wrong lol)
"The Comedown" & "Suicide Season"
by Bring Me The Horizon

BRANDON
"Earth Will Shake"
by Thy Disease

SGT. BOYKIN
"Scrape"
by Blue Stahli
&
"Black Crow on a Tombstone"
by Satyricon

LEON
"On Earth"
by Lifeseeker

ROGER & REED
"Switchback (Detroit '00 Remix)
by Celldweller
&
"Recombination"
by The Evolutionaries

SNOWFLAKE
"Make Them Suffer"
by Cannibal Corpse

RANDY
"Hazardous Mutation"
by Municipal Waste

REDNECKS
"Cry of the Banshee"
by Brocas Helm

ROOFTOP BOSS (Name would mean spoilers)
"Fuck Your Enemy"
by Superjoint Ritual

TK TRAIN
"Competition Song"
by Pennywise

SEYMOUR
"Who Da Man?"
by The Spades