Cast Audio
Cast Audio Driver is a HAL (Hardware Abstraction Layer) driver plugin for macOS CoreAudio, shipped as part of Hpplay's audio software. It enables the host operating system to recognize and interface with Hpplay audio hardware or virtual audio routing features. Like all CoreAudio drivers, it runs at the system level and is not a standalone application but rather a kernel extension component that works in concert with macOS audio infrastructure.
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1 suggestionCast Audio Driver is a system-level CoreAudio HAL driver component, not a separately downloadable application. It is distributed and updated exclusively through Hpplay's audio software installer or control application. To update the driver to a native Apple Silicon build, reinstall or update the main Hpplay audio software from Hpplay's official website using their native installer. Do not attempt to update this component through the Mac App Store or generic downloads. If Hpplay has not yet released a native Apple Silicon version of their software, contact Hpplay directly to confirm native support is planned before macOS 28 ships in September 2028, when Apple removes Rosetta 2 support and Intel-only drivers will cease to function.
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