Speed limit

OKAY! This seems to be an age old problem, I need a firmware for a decent dvd rom drive, the drive is to be used in an audiophle grade dvd/cd player, so the best drive is of a precision nature, the latest liteon drives look quite nice :wink: what is needed is to limit read speeds, 4x - 2x max, now as far as im aware omnipatcher only alters dvd media and not cd, to iterate cd and dvd are both important for the purpose.
another requirement is region free.
I know dvd-roms are of little importance but please help me (us) please!