UPDATED: Playrec is now hosted on GitHub. Please contribute updates to help improve Playrec. UPDATED: Playrec is now compatible with Octave 3.0 as well as Matlab. Playrec is a Matlab and Octave utility (MEX file) that provides simple yet versatile access to soundcards using PortAudio, a free, open-source audio I/O library. It can be used on different platforms (Windows, Macintosh, Unix) and access