I need help making a cinematic

I'm going to make a music video by making different warcraft cinematics and using fraps to record them, then using premiere to edit them into one movie. I have 2 problems right now however.

1. Unless I actually play a sound manually fraps wont pick it up, excluding ambient defualt music. In otherwords if an archer just died it wouldn't record her screaming so I would have to go manually into the trigger editor and add the sound of archer death into my sound bank and then make a trigger to play archer death at the right time. This is ok sometimes but in big battles its nearly impossible. I was just wondering whether or not there was anyway to edit some sound setting that was causing these sounds to not be picked up.

2. Theres a scene where a bunch of centaurs run forward, and instead of adding everyone to a unit group one by one before I ordered them to run I wanted to make a trigger that adds them all at the same time. Here's what I did:

Events: Unit enters playable map area.

Cond: Owner of entering unit equal to dark green (owner of centaurs)

Actions: Unit Group - Add entering unit to unit group Centaurs.
Play sound - CentaurYesAttack

I have the sound action there to test whether or not the centaurs are actually being added. And it never plays. I know that I have it unchecked so it is just a sound. I also added another action where a transmission is sent from a centaur kahn. This was just incase so many sound files were played they all negated each other, but I dont see the message either... Help???

Okay... To answer your second question;

Do an integer loop, 1 to as many units as you have. Then pick all units in *selected area* of *Centaurs* and add *Picked unit* to *Your unit group*.

I'm a bit rusty (Haven't done anything with WC3/TFT in over 6 months) but that's the basics.

gracias, will do try it right now.