SoundSystemSound Property MSBuild Extension Pack Help 4.0.12.0
Sets the SystemSound to play. Supports: Asterisk, Beep, Exclamation, Hand, Question. Does not support Repeat or Interval.

Namespace: MSBuild.ExtensionPack.Multimedia
Assembly: MSBuild.ExtensionPack (in MSBuild.ExtensionPack.dll) Version: 4.0.0.0
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Reference