XAudio2 structures and enumerations.
XAudio2Create: Top-level function that creates an XAudio2 instance.
IXAudio2: Top-level XAudio2 COM interface.
IXAudio2EngineCallback: Client notification interface for engine events.
IXAudio2MasteringVoice: Mastering voice management interface.
IXAudio2SourceVoice: Source voice management interface.
IXAudio2SubmixVoice: Submixing voice management interface.
IXAudio2Voice: Base voice management interface.
IXAudio2VoiceCallback: Client notification interface for voice events.
XAudio2 COM object class and interface IDs.
XAudio2 constants, flags and error codes.