Well, I do apologize because there isn't much for you guys to work on just yet.
Mainly, the character auditions are there so that we can get a general idea of what we are working with for when the actual voice acting part of the project is to be completed.
At the moment, especially since we've shifted directions with our first release, we do not have any REAL work for the voice actors to do. There are some other miscellaneous things to be taken care of (such as general chatter), but otherwise, no specific things to be done.
The game missions aren't quite like a Flash movie or something that has the script written out first and then the animation/other stuff are created. The content needs to be there and we need to figure out what works and what doesn't (especially when experimenting with the features of the SCP), and then we start putting the puzzle pieces together.