I understand, projects such as this are large and multi-faceted, I guess I'm chomping at the bit to get involved...
I totally agree to publish the music under a GPL, I'm familiar with the terms of the GPL and as long as I am given due credit I am happy.
I'll have a look at the list of weapon sounds needed, I might have a go at making some.
I read somewhere you need all music in the Ogg format, is that right?