flac

Free lossless audio codec for compressing audio files without quality loss

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Free lossless audio codec

flacmetaflac

Encode a WAV file to FLAC format$ flac input.wav -o output.flac

Decode a FLAC file back to WAV$ flac -d input.flac -o output.wav

View metadata tags of a FLAC file$ metaflac --list input.flac