Are you saying no legal way for you to supply it? If so I get that.
To do it where we would supply the music by ripping from the psx disc I'm thinking that sounds more complex to code than say just ripping the redbook audio from a Quake disc to use with a sourceport.
Appreciate adding mouse/keyb support seeing as you don't use it yourself. I tried playing with my xbox360 pad but couldn't get on with it.