Vehicles Sounds and Particles...

Hey, i tried adding the sounds from the tribes 2 vehicles. I added them exactly as they were in T2, modifying the path obiusly, but they dont work, it doesnt give any error, but they wont play....
Anyone else had any experience with this?
I also tried playing with the particle emitters in the vehicles but they dont work either. Anyone know which particled emitter corresponds to the White "thrust" square in the WildCat vehicle?
Well, hope someone can help out, thanks