A Realtek liberou a versão 2.57 de seu "pacote" de drivers chamado Realtek HD Audio Driver. Abaixo características e links para download.

Driver Package R2.57

    Realtek HD Audio Driver support all of Realtek HD Audio Codec .
    1. Vista/Windows 7 WHQL Supporting: ALC882, ALC883, ALC885, ALC886, ALC887, ALC888, ALC889, ALC892, ALC899, ALC861VD, ALC660, ALC662, ALC663, ALC665, ALC670, ALC680 ALC260, ALC262,ALC267, ALC268, ALC269, ALC270, ALC272, ALC273, ALC275

    2. Windows 2000/XP WHQL Supporting: ALC880, ALC882, ALC883, ALC885, ALC886, ALC887, ALC888, ALC889, ALC892, ALC899, ALC861VC, ALC861VD, ALC660, ALC662, ALC663, ALC665, ALC670, ALC680 ALC260, ALC262, ALC267,ALC268, ALC269, ALC270, ALC272, ALC273, ALC275

    3. HDMI Device WHQL Support: ATI HDMI Devices

    4. OS Supporting: Microsoft Windows XP, Windows 2000, Windows Server 2003, Vista, Windows Server 2008, Windows7 - x86/x64

    5. Pack with Microsoft High Definition Audio UAAV1.0a(5013)

    6. Add/Fix
        1.) Driver :
            1. Customizations.
        2.) Package :
            1. Realtek Setup program will update audio driver automatically in update Realtek audio driver case under Vista/Windows 7.
               Realtek setup program will un-install the previous version Realatek audio driver on the system first.
               And it will re-install Realtek audio driver automatically after system re-boot.