Use AirDroid to mount phone as network drive on Mac OS

Hey everyone,
I have a Samsung Galaxy S3 and a Mac running Mac OS 10.8.2; currently there is no way of connecting the phone to the computer via USB.
I have already tried the Android File Transfer app, but this is not recognising the phone when connected.

So I had an idea to use AirDroid to attempt to mount the phone as a network drive/server; I can get to the point where it's asking for a username and password, but I have no idea what they could be!

I love the fact that you can access the phone's filesystem via browser, but the ability to access the phone via the computer OS would be cool!!!!

Yeah I got that far as well, I wanted to use it as a network drive in Mediamonkey. Please post if you find out what the username and password would be!