Hi Alex,

Below example is using APIs from winmm.dll directly to control the volume
and can mute the sound:

#Audio Library Part I - (Windows Mixer control) - The Code Project -
Multimedia
http://www.codeproject.com/useritems/AudioLib.asp?df=100&forumid=217323&exp=
0&fr=26&select=1366906

Please let me know if this is what you wanted. Thanks.

Sincerely,
Walter Wang (wawang@online.microsoft.com, remove 'online.')
Microsoft Online Community Support

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