Compression of the main Storyline Native file?

Hi All,

I have a huge (I'm talking really huge) 300mg storyline file and it is a piggy to transfer over sharedrives, etc....  I know that this is part and parcel because I cheated and edited or cropped images inside of SL, as opposed to, doing them to size and spec in photoshop first.

So is there any feature or way to quickly compress the file?  Basically so that it would get rid of the phantom areas in the pictures that have been cropped.  That usually is the reason for large file sizes.  Hence that is why PPT brought that feature in because of the artifact/phantom material that wasn't required.

Pretty much I would do this when the project is ready for deployment, and archiving so that I can keep my sharedrive capacity in check too.

Any help or suggestion (outside of the obvious) would be appreciated.