public static void SetSystemSoundsMute(bool mute)
        {
            Interfaces.ISimpleAudioVolume volume = GetSystemSoundsVolumeObject();
            if (volume == null)
            {
                throw new Exception("No session found for system sounds");
            }

            Guid guid = Guid.Empty;

            volume.SetMute(mute, guid);
            Marshal.ReleaseComObject(volume);
        }
        public static void SetApplicationMute(int pid, bool mute)
        {
            Interfaces.ISimpleAudioVolume volume = GetVolumeObject(pid);
            if (volume == null)
            {
                throw new Exception("No application found for pid");
            }

            Guid guid = Guid.Empty;

            volume.SetMute(mute, guid);
            Marshal.ReleaseComObject(volume);
        }