first thing you would need is an analog audio cd cable plugged into your cdrom drive and soundcard
once that's done, open up device manager then expand the cdrom drive in question. open up it's properties, then where it says "Enable digital CD audio for this CD-ROM device" untick it.
now before you run your fav. game, open up you sound volume control and make sure cd audio has not been muted
run your fav. game and enjoy your cd music