Welcome,
If you would have owned it for a period of 12 months or so at the time of shipping, you can bring it in as a personal import. You would also have to get it converted and complianced.
Your other option is to bring it in through RAWS, they will ship it for you and also do the conversion and compliance for you in order for it to get registered.
If you are not staying in Australia for long you could get a permit to bring it in as is, but you must take it back within a certain period of time, otherwise you would have to convert it.
Thats as far as I know. I'm in the same boat kinda, but in the US instead.