own music on crazy taxi??

Does anyone know hot make a copy of a DC game however swapping over the games music for your own?? i would like to change the music on CRazy Taxi as i like r&b/rap/hiphop and was wondering if there is a tutorial out there somewhere, or if someone could explain it for me.
Thanks guys

[xena]

####://luna.spaceports.com/~selfboot/cdmage/ipbin/dclinux/Romloader/Makenx/music.htm

####://luna.spaceports.com/~selfboot/database/obs/fix/ip/adx2/adx2.htm

[louie]

turn off music on crazy taxi, leave sounds on, put in ur cd in da stereo n start playing...