evo i c/p za .sys :
wdmaud.sys is located in the folder C:\Windows\System32\drivers. Known file sizes on Windows XP are 82944 bytes (92% of all occurrence), 77440 bytes.
The driver can be started or stopped from Services in the Control Panel or by other programs. wdmaud.sys is a Windows core system file. The program has no visible window. It is a Microsoft signed file. There is no detailed description of this service. wdmaud.sys seems to be a compressed file. Therefore the technical security rating is 0% dangerous.
Important: Some malware camouflage themselves as wdmaud.sys, particularly if they are located in c:\windows or c:\windows\system32 folder. Thus check the wdmaud.sys process on your pc whether it is pest. We recommend Security Task Manager for verifying your computer's security.