No, you didn't get banned. There aren't any admins logged in right now. Also, as soon as you log into the server, you will see all of the users in the channels. You don't have to move back and forth through the channels.
The Spam Kick isn't set to four...
Click my sig and scroll down, it will give you an image of anyone on the server at any given time.
FIREFOX:
Why don't you pick up a cheap Mic somewhere. They aren't very hard to find and you get get them as cheap as $3.00-$20.00