The gnu ccaudio package offers a highly portable c++ class framework for developing applications which manipulate audio streams and various disk based audio file formats. at the moment ccaudio is primarly a class framework for handling .au, .wav (riff), and various .raw audio encoding formats under posix and win32 systems, though it may expand to become a general purpose audio and soundcard support library. support for controlling cd audio devices has recently been added as well as support for codecs and other generic audio processing services.