what i am going to say is totally a "risk", so there is absolutely no garantee, and i take no responsibility.
put 1 tiny drop of cooking oil on the disk, and use a soft paper (just something that doesn't scratch the cd even more) to wipe the drop of oil all over the disk. basically just need a very thin layer of greese on the CD. this can make the cd "smoother"
I have tried this once and it worked (though have to clean up the cdrom a bit afterwards), but again, NO GARANTEE. and if you try it, DO NOT put TOO MUCH greese. a bit will do. if it doesn't work, than more oil won't help.