FLAC may refer to:
Ogg is a free, open container format maintained by the Xiph.Org Foundation. The authors of the Ogg format state that it is unrestricted by software patents and is designed to provide for efficient streaming and manipulation of high-quality digital multimedia. Its name is derived from "ogging", jargon from the computer game Netrek.
Shorten (SHN) is a file format used for compressing audio data. It is a form of data compression of files and is used to losslessly compress CD-quality audio files. Shorten is no longer developed and other lossless audio codecs such as FLAC, Monkey's Audio (APE), TTA, and WavPack (WV) have become more popular. However, Shorten is still in use by some people because there are legally traded concert recordings in circulation that are encoded as Shorten files. Shorten files use the .shn file extension.
FLAC is an audio coding format for lossless compression of digital audio, developed by the Xiph.Org Foundation, and is also the name of the free software project producing the FLAC tools, the reference software package that includes a codec implementation. Digital audio compressed by FLAC's algorithm can typically be reduced to between 50 and 70 percent of its original size and decompresses to an identical copy of the original audio data.
Flak typically refers to the anti-aircraft fire coming at one from anti-aircraft guns, derived during World War II from the German Flugabwehrkanone, for "aircraft defence cannon" in turn derived from Flugabwehrgeschütz (flag).
Monkey's Audio is an algorithm and file format for lossless audio data compression. Lossless data compression does not discard data during the process of encoding, unlike lossy compression methods such as AAC, MP3, Vorbis, and Opus. Therefore, it may be decompressed to a file that is identical to the source material.
A digital music store is a business that sells digital audio files of music recordings over the Internet. Customers gain ownership of a license to use the files, in contrast to a music streaming service, where they listen to recordings without gaining ownership. Customers pay either for each recording or on a subscription basis. Online music stores generally also offer partial streaming previews of songs, with some songs even available for full length listening. They typically show a picture of the album art or of the performer or band for each song. Some online music stores also sell recorded speech files, such as podcasts, and video files of movies.
A netlabel is a record label that distributes its music through digital audio formats over the Internet. While similar to traditional record labels in many respects, netlabels typically emphasize free distribution online, often under licenses that encourage works to be shared, and artists often retain copyright.
K3b is a CD and DVD authoring application by KDE for Unix-like computer operating systems. It provides a graphical user interface to perform most CD/DVD burning tasks like creating an Audio CD from a set of audio files or copying a CD/DVD, as well as more advanced tasks such as burning eMoviX CD/DVDs. It can also perform direct disc-to-disc copies. The program has many default settings which can be customized by more experienced users. The actual disc recording in K3b is done by the command line utilities cdrecord or cdrkit, cdrdao, and growisofs. As of version 1.0, K3b features a built-in DVD ripper.
The Apple Lossless Audio Codec (ALAC), also known as Apple Lossless, or Apple Lossless Encoder (ALE), is an audio coding format, and its reference audio codec implementation, developed by Apple Inc. for lossless data compression of digital music. After initially keeping it proprietary from its inception in 2004, in late 2011 Apple made the codec available open source and royalty-free. Traditionally, Apple has referred to the codec as Apple Lossless, though more recently it has begun to use the abbreviated term ALAC when referring to the codec.
CDex is a free software package for Digital Audio Extraction from Audio CD and audio format conversion for Microsoft Windows. It converts CDDA tracks from a CD to standard computer sound files, such as WAV, MP3, or Ogg Vorbis. CDex was previously released as free software under the terms of the GNU General Public License (GPL); however, although the website claims that this is still the case, no source code has been released since 2005. It was originally written by Albert L. Faber, and is developed and maintained by Georgy Berdyshev. Recent versions of the software may be compromised and a security threat.
Sound Juicer is the official CD ripper program of GNOME. It is based on GTK, GStreamer, and libburnia for reading and writing optical discs. It can extract audio tracks from optical audio discs and convert them into audio files that a personal computer or digital audio player can play. It supports ripping to any audio codec supported by a GStreamer plugin, such as Opus, MP3, Ogg Vorbis, FLAC and uncompressed PCM formats. Versions after 2.12 implement CD playing capability. Last versions produce lossy formats with default GStreamer settings.
Sound eXchange (SoX) is a cross-platform audio editing software. It has a command-line interface, and is written in standard C. It is free software, licensed under GPL-2.0-or-later, with libsox licensed under LGPL-2.1-or-later, and distributed by Chris Bagwell through SourceForge.
The following tables compare general and technical information for a variety of audio coding formats. For listening tests comparing the perceived audio quality of audio formats and codecs, see the article Codec listening test.
OggSquish is one of the first names used for the Ogg project developed from 1994 by the Xiphophorus company. Ogg Squish was also an attempt from the Xiphophorus company to create a royalty-free lossless audio compression codec.
A tag editor is a piece of software that supports editing metadata of multimedia file formats, rather than the actual file content. These are mainly taggers for common audio tagging formats like ID3, APE, and Vorbis comments, but can also be taggers for JPEG, PDF and TIFF metadata.

GOM Player is a media player for Windows, developed by GOM & Company. With more than 100 million downloads, it is also known as the most used player in South Korea. Its main features include the ability to play some broken media files and find missing codecs using a codec finder service.
aTunes is a free and open source audio player with MPlayer as its playback engine. aTunes supports MP3, Ogg Vorbis, FLAC and other formats. aTunes allows users to edit tags, organize music and rip audio CDs easily.
Total Recorder is digital audio editor software from High Criteria, Inc. which is able to record any sound coming through a computer soundcard. In addition to recording through a soundcard, Total Recorder is able to record digital sound directly through its virtual sound driver. This driver provides an advantage of recording audio reproduced by an external program directly in digital format, i.e. without digital-analog-digital conversions leading to loss of quality, and even in those cases when a computer soundcard has no loop-back line. Total Recorder is a shareware program. Evaluation version of Total Recorder is a fully functional version of the program, with the exception that an audible noise will be inserted about every 60 seconds.
Qobuz is a French commercial music streaming and downloading service. It was founded in 2007 by Yves Riesel, expanded to a limited range of overseas markets, including the United Kingdom, the Netherlands, Germany, Italy and Spain, and launched in the US in May 2019. It offers a tiered subscription service and, like its competitor Tidal, provides free-of-charge streaming only for a trial period.