portaudio
This package provides an interface to the PortAudio audio I/O library. See the package documentation for details.
To build this package you must first have the PortAudio development headers and libraries installed. Some systems provide a package for this; e.g., on Ubuntu you would want to run apt-get install portaudio19-dev. On other systems you might have to install from source.
Thanks to sqweek for motivating and contributing to host API and device enumeration.