From Levinhurst on Twitter: "Ok go to Amazon.com look for our special pre tour gift to you all! Download MAU MAU for free! Hurry! wont last forever!"
Note: This is US only. I've asked Lol for a link for fans not in the US. Will post as soon as I hear something.
Update: Here's the answer from Lol - "Not at the moment ;-( it's a special deal done with Amazon US I'm working on getting it worldwide!" (Thanks Lol)