Download of pmdefaults-mac-180.zip (pmdefaults-mac-180.zip ( external link: SF.net): 76,254 bytes) will begin shortly. If not so, click link on the left.
PortMedia offers free, cross-platform, open-source I/O libraries for digital media including MIDI, video, and audio (see www.portaudio.com). Most work is in C to facilitate interoperabilty with many languages and systems.
