im aware that you dont live in australia but our crazy country has this crazy notion that if you're a citizen then you are required to vote, if not then you get fined. and being out of the country is no excuse.
Yes, I know about that law but as I am not now (and never have been) on the electoral roll in Australia there is no obligation for me to vote. It is not compulsory to enrol while you are living outside of Australia.
BTW: being outside Australia is a perfectly acceptable reason for not voting. The point is that you have to inform the AEC that you will be outside Oz, otherwise you will get fined for not voting.