VIA chips don't have model numbers, they have chip numbers that begin with vt17xx. And "VIA Technologies Inc" is only the name of a company who makes many chips. However, VIA only has a few sound drivers listed. You can find them listed on their website:
http://www.via.com.tw/en/support/drivers.jsp
And
VIA Technologies Inc does not make a wise choice for a member name here on driverguide.com