The old one that is; FSX/P3D, not the msfs one.
I'm having some trouble finding this one, the aussiex forum seems to have been gone for quite a while, it's listed on lockonfiles (which seems to be down now, was up a couple of days ago though)but the download link is dead.
I've also had a quick look in the sim-outhouse library with no luck.
Does anyone know if it's posted somewhere else?