I thought-Why is there a sprite dump, but no sound dump? So here one is.

I'll start it off,

Good idea, except if people make random sounds, it is for the random sprites they make. This should be used, it's just it probably won't. I have a first entry for you if it isn't used in the Brain mech project.
EDIT: Okay, it's had long enough, and hasn't been used. Here's some epic robot voices, courtesy of the free sound project:
EDIT2: Okay, we are using the following voices for wounds;
Critical error
Warning
And one other I can't remember, ARGH...

Here. in this project are 5 sounds, probably more to come, 4 of which are new laser sounds. One of them was requested (I finished the request too late) by the above poster.

http://savefile.com/projects/808761061

FZclick - failed request
Laser Thing - Some kind of a laser explosion
Laser Thump - A laser cannon (atleast, that's what I aimed for) firing sound.
Laser Zap 1 Laser gunfire
Laser Zap 2 More... laser gunfire