Thanks Steve.
It was a bit of a shock when the director asked for a version of the soundtrack to be bounced to QT and I couldn't find it!
I checked under the bed, everywhere... :-)
Rounik had a great idea - either put it in 32 bit mode and then come back - or bounce the audio in stereo and do it in QT directly - I ended up doing it in iVideo - which was hilarious as i had no idea how it worked!
Thanks again.
David