1/ mount disc 1 and open the installer in the fairlight folder
2/ when it asks for disc 2 you MUST leave disc 1 mounted and click "next" on the installer
3/ the installer should say "cannot find .sid file do you want to search manually?" or something similiar
4/ with disc 1 still mounted click "YES"
5/ UNMOUNT disc 1 and MOUNT disc 2
6/ Click on the .sid file in DISC 2
This method is the only way i got it past %98 but you have to do it in that order..
yo this guy is a genius ^^^