This is a Windows system installed file with Windows File Protection (WFP) enabled.
audiosrv.dll has 65 known versions, the most recent one is 6.3.9600.16384 (winblue_rtm.130821-1623). The average file size is about 358.69 KB. This is a .NET Common Language Runtime (CLR) assembly.
Manages audio for Windows-based programs. If this service is stopped, audio devices and effects will not function properly. If this service is disabled, any services that explicitly depend on it will fail to start.
(Note, the behaviors below are for all versions of audiosrv.dll, select a unique version for details.)
United States installs about 40.15% of Windows Audio Service.