DC7700 SFF Boar in DC7600 SFF Case

Hello,
Did ou manage to sort the front audio out as i have just put a dc7700sff board into a dc7600sff case and i have the sane problem with front audio.I managed to sort the hddd leds out easily but i'm strugling wit the front audio.I did manage to get rid of the error 917 at boot by swapping oin 7 with pin 4 but this only removes the error.The front audio panel still doesnt work.