“Hi Doug. I am about to send a short film to my sound editor and he has asked that all audio have 100 frame handles on each clip.
How do I best/efficiently achieve this without changing my selected audio in the film?”
Traditionally you would export an OMF file but OMF export is no longer supported as it was in FCP7. This is one of the things that has changed in FCPX that is not for the better and still needs to be addressed.