Video Nasty!

I never apologise for lack of posting ;-) but... just in case you are interested my Powerbook is currently spending it's day (and night)  wrestling with rendering video... which by the way (as our American cousins would say) is at this very moment 'biting my Ass!'... WHY does nothing work when you need/want it too!  Current hassle is a perfectly good video composite which for some reason refuses to export the Audio... even though the settings are right and it has been doing it all day!?  The big question is do I go to bed before I throw it through the window... or do I stay up until I can resolve the problem and the be able able to sleep peacefully for a couple of hours before Nathan wakes up!?  WHY DO WE BOTHER!?