This is the Vortex AU8830 Windows 2000 driver version 5.10.2500
It seems to be a version of the original 1997 Aureal official driver that was modified by Aureal themselves in 2000. I take it this is the official "last beta driver" released by the manufacturer. The file is large, but contain all the utilities and secondary drivers associated with the Aureal card. I got this from a Russian FTP site and haven't tried it out yet, as I haven't yet installed the card.