let me take a crack at your emulation problem.
Playstation games are multi session disc's, one session for data and the other for music.
in most cases when a mult session disc image is created there is some sort of *.cue file created with it.
This provides session information to the image reader
example - I have a WO3SE.ISO and WO3SE.CUE files in the same directory
if i launch WO3SE.ISO with ePSXe i get no cd audio ingame
if i launch WO3SE.CUE i get perfect audio
sometimes multisession information is stored in the *.iso file itself (but sounds like not the case for you)
if you try a different disc image you might have greater sucsess
cheers