Metro Osx Maudio Delta 1010lt S/pdif, I need help with S/PDIF in Metro for OSX Options

[jopey]

Hi All,
I need help cofiguring my Metro for OS X.
I want to switch the Master Clock to S/PDIF in so that
I can use my art Digital I/O preamp.
In the M-Audio control panel for the Delta 1010lt
the rate says it is 'locked' and there is no way to make it unlocked.
If i click the S/PDIF button it stays lit for a second
and then switches back to internal.
In Metro where I should be able to choose what the Master clock is
there in no option in the dialog box.

Jeremy from Metro thought it might be that the M-audio driver
doesn't support the S/PDIF master clock.
Thanks a bunch!!