Speeding up Exporting time...HELP!!!

Is there any way to speed up exporting or finalizing an iMovie project? I made a wedding video for a friend with some videos, music, and photos. It is an hour and forty four minutes long and it's telling me it would take 15 HOURS to export it into iTunes...and when I tried to finalize it it says 62 HOURS!!! HELP!!!! 😮

I am running on

Software Mac OS X Lion 10.7.4 (11E53)