I'm trying to think where I've seen roo _jerky_ ... beef jerky's now in a lot of service stations - it might be possible some of them stock the roo version ...??
I found smoked goods at Eco Meats in Belconnen - emu, kangaroo, wallaby, possum, etc - and completely forgot to look for jerky. Pretty certain it'll be around.
Bluetongue, it may well be worth getting to the Vic Markets in Melbourne and trying the deli section there. Even if someone doesn't stock it, I bet someone knows of a place where it is stocked.
The Essential Ingredient (or is it still called The Vital Ingredient?) in South Melbourne may also stock roo jerky or, again, know where to source it. You could call them directly - website is http://www.theessentialingredient.com.au/
and should have phone numbers.