oggdec is a command line Ogg Vorbis decoder created by John33. Version 1.9.2 introduced correct channel mapping for decoding and channel mapping in creating WAVEFORMATEXTENSIBLE conforming output wave files. Playback also supports multi-channel in the same way. A further option is added to downmix multi-channel to stereo for decoding to file, or playback. The multi-channel mapping conforms to the Vorbis I Specification.