System Sound Services Property Identifiers Property identifiers used when playing alerts with System Sound Services. TopicsConstantskAudioServicesPropertyIsUISoundkAudioServicesPropertyCompletePlaybackIfAppDies See AlsoManaging System Sound Services PropertiesAudioServicesGetPropertyInfo(_:_:_:_:_:)AudioServicesGetProperty(_:_:_:_:_:)AudioServicesSetProperty(_:_:_:_:_:)AudioServicesPropertyIDAudio Hardware Services Properties