Well I wanted to make this clip's audio deep, like it was playing in slow-motion,
Like if you drag the shuttle as little as you can to the right , so a loud screaming noise for example would then instead sound like a bomb exploding almost.
I was wondering what I should use to get this effect , I tried the ones from Audio Effects, but I didnt really understand it, help ?
I'd do this in Audition, but Soundbooth might work as well. It would be a Pitch Shifter and then some Time Remapping (different name in Audition, but I used this for a reason).
Before you leave PrPro, try both shifting the pitch and also Time Remapping, with a negative speed. Think that both are available in PrPro.
Otherwise, it'd be off to Audition for me.
[Edit] No, does not look like they are available in PrPro. If you do not have Audition, or Soundbooth, the freeware program, Audacity, might work fine.