Is there a community centre near by where they offer language courses? These days Chinese courses have taken over, but if there is it usually goes for one term which is a few months. You could also look into a language swap with someone... maybe try gumtree.com.au?
Funny you say Japanese, that's my native language :-) It's quite Australian in a way isn't it, a while ago lots of people used to study it and I've come across some who speak it fluently although they've never lived in Japan.
Me:38 H:37, no kids Married: 2.5 yrs, together 5yrs Separated since Mar 2010