Yes, I'm doing a complete CSS pack like Trappa as well :P
He did some good work, but the weapons needed work doing to them, and he also didn't includ any looping ambience because at that time none of us on fpsb knew how to make sounds loop.
I hope my Complete CSS pack turns out nice, but, anyway, meh.
This is part 1. It includes some ambient, and music.
Keep an eye out for part 2 coming soon.