SciTech Software has developed many wonderful products that came to be forgotten. This audio driver is a perfect example! HDA is not even available for Windows 9x but an independently-developed driver for Windows NT 4.0 has come thanks to SciTech. A variety of audio hardware is accessible thanks to the universal HDA driver and AC'97 codec!
Features:
HDA (High Definition Audio) driver support
AC'97 codec and driver support
Compatible with Windows 3.1, 95, 98, 98SE, and ME
Requirements:Windows NT 4.0
Notes:
A small (very incomplete) compatibility list can be viewed here
Screenshots: