The official drivers for High Definition Audio
Realtek HD Audio Drivers is a tool that allows you to listen to audio in HD on your PC. It manages the interface between your operating system and your PC's audio hardware so that you can listen to music through the speakers or headphones. It's designed for motherboards with Realtek compatible chipsets (see list below).
This version of the driver is compatible with Windows 2000, XP and 2003 (32bit and 64bit) and is offered as an executable.