| ChannelVolumeChangedEventArgs | Contains the event data of a ChannelVolumeChanged event. |
| MasterVolumeChangedEventArgs | Contains the event data of a MasterVolumeChanged event. |
| MutedChangedEventArgs | Contains the event data of a MutedChanged event. |
| VistaCoreAudioApiHelper | Contains VistaCoreAudioAPI related utilities. |
| DeviceChannel | Specifies a Channel of an MMDevice. |