From the title, I wondered how to call Mac OS X's "Core Audio" (https://en.m.wikipedia.org/wiki/Core_Audio, https://developer.apple.com/library/mac/documentation/MusicA...) from Windows. My best guess was that QuickTime, or iTunes ship with DLLs implementing it for Windows.

Turns out a bit of a disappointment for the hacker in me. Windows has an API with the same name (https://msdn.microsoft.com/en-us/library/windows/desktop/dd3...)