Rip Audio CDs

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CD rippers are designed to extract ("rip") the raw digital audio (in a format commonly called CDDA) from a compact disc to a file or other output.

Introduction

Music is usually stored on audio CDs in an uncompressed format which requires a lot of space (e.g. 700MB for only 80 minutes of audio). Extracting the audio from the CD usually involves compressing it so that it requires less space using either:

Lossless compression: same quality, roughly 1/2 the size. Examples: APE and FLAC
Lossy compression: lower quality, roughly 1/10 the size. Examples: MP3 and OGG

Ripping

From physical discs

See Optical disc drive#Ripping for a list of available software. For example, to extract audio with the cdrtools package:

$ cdda2wav -vall cddb=0 speed=4 -paranoia paraopts=proof -B -D /dev/sr0

Some CD rippers support burning audio to a CD and transcoding on-the-fly (e.g. cdda2mp3).

Note: By default, cdda2wav uses freedb.freedb.org as its cddbp server to lookup CDs. Freedb.org was shutdown on May 28th 2020 and as of 13th of June 2020, this URL used for lookups no longer seems to operate (see Wikipedia:Freedb#History). An alternative cddbp service provided by gnudb.org does exist and the parameters cddbp-server and cddbp-port could be used to access that instead.

To allow cdda2wav to create CUE files, you must also specify -t all to switch cdda2wav into a mode that creates a single audio data file for the whole CD.

Alternatively, to create a bin and cue file pair from an audio CD, use cdrdao. For example:

$ cdrdao read-cd --read-raw --datafile cdimage.bin cdimage.cue

The cue file generated by this method is not the same as some may expect from tools like EAC. To convert the cdrdao formatted cue files to a "standard" cue file, try yatoc2cue^AUR.

From image files

Sometimes rather than a physical disc, only an image is available. The audio tracks can still be extracted from image files.

The bchunk program can extract data and audio tracks from a .bin / .cue pair. This example will save each data track as outputXX.iso and each audio track as outputXX.wav where XX is the track number:

$ bchunk -w image.bin image.cue output

Post-processing

Tag editors

For some examples of audio tag editors see List of applications/Multimedia#Audio tag editors.

Converting to other formats

Re-encoding to another format can be done with lame, flac or FFmpeg. For example, to convert the output raw audio files from #Ripping to highest quality variable bitrate MP3:

$ lame -V0 input.wav

To convert them to FLAC instead:

$ flac input.wav