Sure. Just put into Google what make your sound system is and put the word update sound drivers and you should have a link to new updated sound drivers. Easy.

Try the manufacture's website for updated drivers. If it's on-board sound then check the main-board manufacturer's website.
Also try DriverGuide - XP Drivers, Windows 7 Drivers, Printer Drivers, Audio Drivers, CDROM Drivers, Network Drivers, USB Drivers, Device Drivers, Driver Downl (http://www.driverguide.com) if you're not winning.