Short for
Free Lossless Audio Codec, a free
codec developed by Xiph.org and used to compress audio files. FLAC is similar to
MP3 except that it is
lossless (the decoded audio is identical to what went into the encoder and is verified with a 16-bit
CRC). None of FLAC’s encoding/decoding methods are covered by patents, so the extensible
source code is available under
open-source licenses. FLAC is supported by most
operating systems.