How do you audition for Nega Network?

Hi! I'm interested in auditioning for Nega Network. I have a question about during their attachment part of their "Applying," are you suppose to include the song demo into the zip file???

Here are the links:
http://www.neganetwork.com/audition/
http://www.neganetwork.com/audition/audition.php

Sorry I'm kind of in a hurry if I didn't explain clearly.

Thanks