CDA(1)CDA(1)NAMEcda - Compact disc digital audio player utility
SYNOPSIScda [-dev device] [-outport mask#] [-batch] [-online |
-offline] [-debug level#] command
DESCRIPTION
Cda is a program that allows the use of the CD-ROM, CD-R,
CD-RW or DVD drive as a full-featured stereo compact-disc
player and "ripper" from the shell command line. It can
be used interactively in line mode or visual (screen)
mode, or as a script-driven utility. This is a companion
utility to xmcd, a Motif-based CD audio player application
for the X window system. Cda uses the same configuration
and support files as xmcd.
Most of the features found on "real" CD players are
available in cda, such as shuffle and repeat, and track
programming functions.
CDDA (CD digital audio) data extraction, playback, save-
to-file, and pipe-to-program are supported on many
platforms. For data extraction to file or pipe, cda can
generate the data in MP3 (MPEG layer 3), OggVorbis, WAV,
AU, AIFF, AIFF-C and raw headerless formats. Simultaneous
extraction to file/pipe and real-time playback is possible
on high performance computers.
Multi-disc changers are also supported. You can select to
play only a single disc or auto-play all discs in normal
or reverse order.
The Gracenote CDDB(R) Music Recognition Service(sm)
feature is supported by cda, which allows the CD
artist/title and track titles, and other information
associated with the loaded CD to be displayed. For CDDA
extraction to MP3 and OggVorbis formats, cda can auto-fill
the CD information tags embedded in these files.
This release of cda supports the enhanced Gracenote
CDDB2(R) service on a number of platforms, and offers much
richer features and content than the "classic" CDDB.
Moreover, CDDB2-supplied information is now in UTF-8 data
format, providing full localization support. See
"LOCALIZATION" below.
In addition to CDDB, this release of cda supports reading
CD-TEXT data from the disc for the disc/track artist and
title information.
No capability is provided to add, modify or submit CDDB
entries in cda. You must use the X-based xmcd(1) utility
(or another CDDB-enabled application with the appropriate
features) for that purpose.
On systems with more than one CD drive, multiple
invocations of cda can be used to operate each drive
independently.
Cda is designed to be easy to use, with particular care
taken to make all output easily parsable by other
programs.
The internal architecture of cda is designed to be easily
portable to many UNIX operating system variants, and
adaptable to the myriad of CD drives available.
OPTIONS
Cda supports the following options:
-dev device
Specifies the path name to the raw CD device. If
this option is not used, the default device to be
used is the first drive set up with the xmcd
configuration program (See below).
-outport mask#
Specifies the audio output port for CDDA real-time
playback mode. The mask specifies the output
port(s) desired:
1 Internal speaker
2 Headphone
4 Line-out
You may add the values together to enable multiple
output ports (i.e., A value of 3 turns on both
Internal Speaker and Headphones). When the mask is
set to 0, the port setting is unmodified, and an
external audio control utility may be used to
change the settings. Note that this option may be
meaningful only on some platforms, and only certain
ports may be available on a particular
architecture. See the PLATFORM file for details.
-batch Signifies that cda should run in batch mode. This
suppresses all interaction with the user (i.e.,
will not prompt the user to type anything). Batch
mode is not meaningful in visual mode.
-online, -offline
Forces the cda client to enable or disable Internet
access. If this option is not specified, then the
default is configured via the internetOffline
parameter in the common.cfg file. In offline mode,
CDDB lookup will only be done from the local cache.
-debug level#
Causes verbose debugging diagnostics to be
displayed on stderr. Note that if you are running
in visual mode, the stderr output should be
redirected to a file, or the debug information will
corrupt the screen. The level specifies the type
of debugging messages desired:
1 General debugging
2 Device I/O debugging
4 CD information debugging
32 Sound DSP and output file/pipe debugging
You may add the values together to enable multiple
debugging types (i.e., A value of 3 turns on both
General and Device I/O debugging).
COMMANDS
Cda supports the following commands:
on Start the cda daemon.
off Terminate the cda daemon.
disc <load | eject | prev | next | disc#>
Load or eject the CD, or change discs on a multi-
disc changer.
lock <on | off>
Enable/disable the CD disc lock. When locked, the
CD cannot be ejected using the CD drive front-panel
eject button.
play [track# [mm:ss]]
Start playback. If the track# is used, the
playback starts from the specified track. The
optional mm:ss argument specifies the minutes and
seconds offset into the track from where to start
playback.
pause Pauses the playback. Use cda play to resume
playback.
stop Stop the plaback.
track <prev | next>
Proceed to the previous or the next track. This
command is only valid when playback is already in
progress.
index <prev | next>
Proceed to the previous or the next index. This
command is only valid when playback is already in
progress.
program [clear | save | track# ...]
If no argument is specified, this command displays
the current program play sequence, if any. The
clear argument will cause the current program to be
cleared. The save argument will save the current
program, so that a future load of the same CD will
automatically get the program sequence. To define
a new program, specify a list of track numbers
separated by spaces. To start program play, use
the play command. You cannot define a new program
while shuffle mode is enabled.
shuffle <on | off>
Enable/disable shuffle play mode. When shuffle is
enabled, cda will play the CD tracks in a random
order. You can use this command only when audio
playback is not in progress. Also, you must clear
any program sequence before enabling shuffle.
repeat <on | off>
Enable/disable the repeat mode.
volume [value# | linear | square | invsqr ]
If no argument is specified, this command displays
the current audio volume and taper setting. If a
value is used, then the audio volume level is set
to the specified value. The valid range is 0 to
100. If one of linear, square or invsqr is
specified, then the volume control taper is set to
the specified curve.
balance [value#]
If no argument is specified, this command displays
the current balance control setting. If a value is
used, then the balance is set to the specified
value. The valid range is 0 to 100, where 0 is
full left, 50 is center and 100 is full right.
route [stereo | reverse | mono-l | mono-r | mono | value#]
If no argument is specified, this command displays
the current channel routing setting. Otherwise, to
set the routing, use one of the appropriate
keywords or a value as follows:
0 Normal stereo
1 Reverse stereo
2 Mono-L
3 Mono-R
4 Mono-L+R
status [cont [secs#]]
Display the current disc status, disc number, track
number, index number, time, modes, and repeat
count. If the cont argument is specified, then the
display will run continuously until the user types
the interrupt character (typically Delete or Ctrl-
C). The optional secs sub-argument is the display
update time interval. The default is 1 second.
toc [offsets]
Display the CD Table of Contents. The disc
artist/title and track titles associated with the
current disc, queried from CDDB, is also shown. If
the disc has associated notes or credits, an
asterisk (*) is displayed after the genre
description. Similarly, if a track has associated
notes or credits, an asterisk is displayed after
the track title.
If the CDDB server cannot determine an exact match
for your CD, but found a list of possible matches,
then the user will be prompted to select from that
list. If batch mode is active (i.e., the -batch
option is used), then no such prompt will occur.
If the offsets argument is used, then the track
times are the absolute offsets from the start of
the CD. Otherwise, the times shown are the track
lengths.
extinfo [track#]
Display extended information associated with the
current CD, if available from CDDB. If the CD is
currently playing, then extended information
associated with the playing track is also
displayed. If a track number is used in the
argument, then the extended information of the
specified track is shown instead.
notes [track#]
Display disc notes information text associated with
the current CD, if available from CDDB. If the CD
is currently playing, then the track notes
information associated with the playing track is
also displayed. If a track number is used in the
argument, then the track notes information text of
the specified track is shown instead.
on-load [none | spindown | autoplay | autolock |
noautolock]
Display, enable or disable options when a CD is
loaded. The spindown option will cause the CD to
stop after loading to conserve the laser and motor.
The autoplay option will cause the CD to
automatically start playing after loading. The
autolock option causes the caddy or disc tray to be
automatically locked. The none, spindown and
autoplay options are mutually-exclusive. If no
argument is used, then the current settings are
displayed.
on-exit [none | autostop | autoeject]
Display, enable or disable options when the cda
daemon exits. The autostop option will cause cda
to stop playback, and the autoeject option will
cause cda to eject the CD. Use none to cancel
these options. If no argument is used, then te
current settings are displayed.
on-done [autoeject | noautoeject | autoexit | noautoexit]
Display, enable or disable options when cda is done
with playback. The autoeject option causes the cda
daemon to eject the CD. The autoexit option will
cause the cda daemon to exit. If no argument is
used, then the current settings are displayed.
on-eject [autoexit | noautoexit]
Display, enable or disable options when cda ejects
a CD. The autoexit option will cause the cda
daemon to exit after ejecting the CD. If no
argument is used, then the current settings are
displayed.
changer [multiplay | nomultiplay | reverse | noreverse]
Display, enable or disable multi-disc changer
options. The multiplay option specifies that cda
plays all discs in sequence. The nomultiplay
option will cause cda to stop after the current
disc is done. The reverse option implies
multiplay, except that the disc order is reversed.
If no argument is used, then the current settings
are displayed.
mode [standard | cdda-play | cdda-save | cdda-pipe]
Selects the playback mode. If no argument is used,
then the current setting is displayed. See
"PLAYBACK MODES" below for details about the modes.
jittercorr [on | off]
Enables or disables CDDA jitter correction. If no
argument is used, then the current setting is
displayed.
trackfile [on | off]
For CDDA-save mode, specifies whether a separate
file should be created for each CD track. If no
argument is used, then the current setting is
displayed.
subst [on | off]
For CDDA-save mode, specifies whether space and tab
characters in the output file path name should be
substituted with underscores ('_'). This makes the
files easier to manipulate while using the UNIX
command shell. If no argument is used, then the
current setting is displayed.
filefmt [raw | au | wav | aiff | aiff-c | mp3 | ogg]
Specifies the output audio file format if running
in cdda-save or cdda-pipe modes.
outfile [template]
Specifies the output audio file path name if
running in cdda-save mode (default is audio.ext,
where ext is dependent upon the file format
selected). If no argument is used, then the
currently defined template is displayed. See the
xmcd help file on the output file path template for
information about the special tokens that could be
used in the template.
pipeprog [path [arg ...]]
Specifies the external program to which the audio
stream will be piped to when running in cdda-pipe
mode. If no argument is used, then the currently
defined program is displayed.
compress [<cbr | abr> [bitrate#] | <vbr | vbr2> [qual#]]
If the output file format is mp3 or ogg, this
command selects the file compression scheme to be
used. The cbr method indicates "constant bitrate",
the abr method denotes "average bitrate", and the
vbr modes indicate "variable bitrate". There are
two variable bitrate algorithms to choose from.
Vbr is a time-tested algorithm, whereas the vbr2
mode is a newer, faster algorithm that also
produces great results. For the cbr and abr modes,
an optional bitrate (in kb/s) sub-argument can be
specified. The supported bitrates are a discrete
set of numbers from 32 to 320. A value of 0 can
also be used to indicate the use of an internal
default. For the vbr modes, an optional quality
factor (from 1 to 10) sub-argument can be used.
Lower bitrates and quality factor values yield
smaller files whereas higher numbers produce higher
audio quality. If no argument is used, then the
current settings are displayed.
Note: For the ogg format, cbr and abr selects the
same internal algorithm and the two vbr modes are
synonymous.
min-brate [bitrate#]
In average bitrate and variable bitrate modes, this
commands lets you specify a low bitrate limit. The
encoder will not drop below this limit while
dynamically changing the bitrate. A value of 0 can
be specified to indicate the use of an internal
default. If no argument is used, then the current
setting is displayed.
max-brate [bitrate#]
In average bitrate and variable bitrate modes, this
commands lets you specify a high bitrate limit.
The encoder will not go above this limit while
dynamically changing the bitrate. A value of 0 can
be specified to indicate the use of an internal
default. If no argument is used, then the current
setting is displayed.
mp3 [stereo | j-stereo | force-ms | mono | algo#>]fR
If the output file format is mp3, this command
selects the stereo mode and encoding noise-
shaping/psychoacoustics algorithm. The algorithm
is a number from 1 to 10. Lower numbers gives
faster encoding whereas higher numbers produce
higher audio quality. If no argument is used, then
the current settings are displayed.
lowpass [off | auto | freq# [width#]]
For encoding to mp3 files, this allows a lowpass
filter to be added. The off setting means no
filter, the auto setting causes the encoder to
determine whether a filter should be added and its
parameters. Specifying a frequency (and
optionally, a width) will enable the filter in
manual mode. The frequency and width are both in
Hz. The valid frequency range is from 16 to 50000
Hz. If no argument is used, then the current
settings are displayed.
highpass [off | auto | freq# [width#]]
For encoding to mp3 files, this allows a highpass
filter to be added. The off setting means no
filter, the auto setting causes the encoder to
determine whether a filter should be added and its
parameters. Specifying a frequency (and
optionally, a width) will enable the filter in
manual mode. The frequency and width are both in
Hz. The valid frequency range is from 500 to 50000
Hz. The lower limit is imposed by the polyphase
filter implementation in the MP3 encoder. If no
argument is used, then the current settings are
displayed.
flags [C|c][O|o][N|n][E|e][I|i]
This allows you to specify some mp3 header and
frame flags. The letter c denotes the "copyright"
flag, the letter o denotes the "original" flag, the
letter n denotes the "no res" (no bit reservoir)
flag, the letter e denotes the addition of a 2-byte
checksum to each frame for error correction, and
the letter i indicates strict ISO compatibility.
The use of a upper-case letter turns on the flag,
and lower-case turns off the flag. Multiple flags
may be specified together. If no argument is used,
then the current settings are displayed.
tag [off | v1 | v2 | both]
This command specifies whether an ID3tag should be
added to an mp3 output file (and which version of
the ID3 tag should be added). For ogg files, a
comment tag is added if the argument is not set to
off. If no argument is used, then the current
setting is displayed.
Note: A ID3v2 tag will not be added to the cdda-
pipe stream regardless of the setting of this
command.
device Displays the CD drive and device information.
version
Displays the cda version and copyright information.
cddbreg
Invoke dialog to register with Gracenote in order
to access the CDDB2 service. This command can be
used to do the initial registration, as well as to
change or update user registration information.
This function is not available with the "classic"
CDDB service.
cddbhint
Ask Gracenote to send the password hint via e-mail.
This is used in case you forget the CDDB user
password. The password and password hint are both
initially set via the cddbreg command. This
function is not available with the "classic" CDDB
service.
debug [level#]
Show, or set the debug level. If set, verbose
debugging diagnostics will be printed on stderr of
the terminal that the cda daemon is started from.
If this is the same terminal that is running cda in
visual mode, the debug information will corrupt the
screen. See the description of the -debug option
above for supported debug levels.
visual Enter an interactive, screen-oriented visual mode.
All other cda commands can also be invoked within
this mode.
DEVICE CONFIGURATION
See xmcd(1) for a description of the device configuration
requirements.
WARNING: If cda is not correctly configured, you may cause
cda to deliver commands that are not supported by your CD
drive. Under some environments this may lead to system
hang or crash.
USING CDA
Start the cda daemon with the cda on command (or the F1
(o) function in visual mode). This reserves the CD device
and initializes the program for further commands. All
other cda functions will not work unless the cda daemon is
running. The other cda commands should be self
explanatory.
The off command (or the F1 (o) function in visual mode)
can be used to terminate the cda daemon and release the CD
drive for use by other software.
VISUAL MODE
If the cda visual command is used, it enters a screen-
oriented visual mode. In this mode, the status and other
information available is continuously displayed and
updated on the screen, and virtually all functions are
available via a single key stroke.
A minimum screen size of 80 columns by 24 rows is
recommended for the visual mode.
Visual mode uses the curses screen library to control the
screen. It is essential that the TERM environment
variable reflect the current terminal type, which ideally
should have 8 (or more) function keys. Since function key
definitions in terminfo descriptions are often unreliable,
alphabetic key alternatives are also available.
The screen is divided into two windows: an information
window and a status window. According to context, the
information window displays a help screen, device and
version information, disc information and table of
contents, or extended information about the track. This
window is scrollable if it overflows its allotted screen
area. The status window consists of the last few lines of
the screen, enclosed in a box. The first line contains
the program list, or track number and offset together with
volume, balance and stereo/mono information. The
remaining lines contain the function keys (with their
alphabetic synonymns) and the functions they invoke.
These functions are highlighted when they are on, making
it easy to see the current state.
Screen annotation and online help make operation self
explanatory, but for reference, a list of commands
follows. Alphabetic key alternatives to function keys are
given in parenthesis.
? Display help screen. Dismiss this screen by
pressing the space bar.
F1 (o) On/Off. Start or stop the cda daemon.
F2 (j) Load or eject the CD.
F3 (p) Play, pause or unpause.
F4 (s) Stop.
F5 (k) Enable/disable the CD caddy lock. When locked, the
CD cannot be ejected using the CD drive front-panel
eject button.
F6 (u) Shuffle/Program. Pressing this key cycles through
three states: normal, shuffle and program. In
shuffle mode, the tracks of the CD will be played
in random order. On entering program mode, cda
will prompt for a space or comma separated list of
track numbers, representing a desired playing
order. The list should be terminated by carriage
return. An empty list returns cda to normal mode.
Shuffle and program mode cannot be engaged unless a
CD is loaded but not playing or paused.
F7 (e) Enable/disable repeat mode.
F8 (q) Terminate the visual mode. If the cda daemon is
running, a reminder of the fact is given and it is
allowed to continue. The CD drive will continue
operating in the same state. Cda may be invoked
again in either visual or line mode when required.
D/d Change to the previous/next disc on multi-disc
changes.
Cursor left/right (C/c)
Previous/next track. This is only valid if playback
is already in progress.
</> Proceed to the previous/next index mark. This is
only valid if playback is already in progress.
Cursor up/down (^/v)
Scroll the information portion of the screen up or
down. It may be scrolled up only until the last
line is on the top line of the screen, and may not
be scrolled down beyond the initial position. The
initial scroll position is restored when different
information is displayed, (e.g., when switching to
or from the help information).
+/- Increase or decrease volume by 5%.
l/r Move balance 5% to left or right.
Tab Successive depressions of this key change the mode
from stereo to mono, mono right, mono left, reverse
stereo, and back to normal stereo.
<n> [mins secs]
Proceed to track n at mins minutes and secs seconds
from the start. If mins secs is not given, start at
the beginning of track n.
^l/^r Control-l or control-r repaints the screen. This
is useful if the screen has been corrupted (e.g.,
by operator messages sent by the wall(1M) command).
CD DATABASE
The Gracenote CDDB(R) Music Recognition Service(sm)
feature is supported by cda, which allows you to display
the disc artists/title, track titles, and other
information about the CD or tracks via the toc, extinfo
and notes commands of cda. In visual mode, this
information is displayed automatically if available. You
cannot add, modify or submit CDDB information via cda.
For more details about CDDB, see xmcd(1) and the CDDB file
that comes with this release.
This release of cda also supports reading the CD-TEXT data
from the disc for CD information. Only some recent CDs
are produced with CD-TEXT data and this data can only be
read on CD drives with CD-TEXT capability.
The priority of the CD information schemes (CDDB, CD-TEXT
or local CD database files) is controlled via the
cdinfoPath parameter in the common.cfg file.
PLAYBACK MODES
This release supports the following user-selectable
playback modes (via the cda mode command):
standard
When playing an audio CD, the audio output is the
analog "line out" connection on the back of your CD
drive. There should be an audio cable connecting
this output to your computer audio hardware CD
input (or to an externally amplfied speaker or
stereo system). The audio output is also available
at the CD drive's front panel headphone connection,
if so equipped. The cda volume command affect the
CD drive's built-in volume control, if the drive
has such controls. This is the mode that previous
releases (cda version 1.x through 3.0) supported.
cdda-play
When playing a CD in this mode, cda extracts the CD
digital audio data off the CD drive over the data
cable (e.g., SCSI or ATAPI/IDE). Then, it sends
the data to the DSP (digital signal processor)
device in your computer's audio hardware for real-
time playback. The audio is typically heard
through the computer's built-in speakers. No
signal is produced at the line-out or headphone
connections of the CD drive. The cda volume
command affects the computer's DSP device.
cdda-save
When playing a CD in this mode, cda extracts the CD
digital audio data off the CD drive over the data
cable (e.g., SCSI or ATAPI/IDE). Then, it writes
the data into a file of your choosing. The cda
volume command does not affect the data written to
the output file. The output file format can be
selected to be one of the following:
Format Ext Description
------ ----- ---------------------------------------
RAW .raw Little-endian, 16 bit, 44.1 kHz, stereo
AU .au Big-endian, 16 bit, 44.1 kHz, stereo
WAV .wav Little-endian, 16 bit, 44.1 kHz, stereo
AIFF .aiff Big-endian, 16 bit, 44.1 kHz, stereo
AIFF-C .aifc Big-endian, 16 bit, 44.1 kHz, stereo
MP3 .mp3 Compressed
OGG .ogg Compressed
The file can be played later using an appropriate
playback utility, or converted to another format.
This mode will typically run faster than real-time
with the non-compressed formats. With the
compressed formats, it depends on the CPU
performance of your system.
cdda-pipe
When playing a CD in this mode, cda extracts the CD
digital audio data off the CD drive over the data
cable (e.g., SCSI or ATAPI/IDE). Then, it pipes
the data stream to an external program that you
specify. The output format is selected as in the
CDDA save to file mode. This mode can be used with
an external audio player, encoder, or other digital
audio manipulation program. The external program
must be capable of accepting audio data on its
standard input, in one of the formats listed above.
More than one of the three CDDA modes can be selected at
the same time. For example, if both the cdda-play and the
cdda-save modes are enabled, the two functions will be
performed simultaneously. Note that on most systems, only
one program can access the system's DSP at a time,
therefore you will likely not be able to select cdda-play
and cdda-pipe at the same time, where the external program
is itself an audio player.
NOTE: The CDDA (CD digital audio) modes will function only
on CD drives that provides this capability, and only on
some OS and hardware platforms. See the RELNOTES file for
details about platform support and other CDDA related
notes.
LOCALIZATION
The "classic" CDDB service supplies data in the ISO
Latin-1 format only, multi-byte characters are not
supported.
The CDDB2 service supplies data is in UTF-8 data format,
which is identical to ISO Latin-1 for single-byte
characters. Multi-byte character sets are also supported.
On platforms that provides the iconv(3) function, cda will
attempt to convert UTF-8 strings to the default character
set as specified by the LANG environment variable. This
conversion will occur only if the system's list of locales
also support UTF-8. Otherwise cda will display the UTF-8
strings without modification.
If you desire to view CDDB data in languages other than
English or the ISO Latin-1 European character set, you may
need to configure your display terminal to display the
appropriate fonts (if the terminal has such capabilities).
Terminal font configuration is device-dependent, OS-
dependent and beyond the scope of this document. Please
see your display terminal's documentation (or in the case
of a computer graphics console, the operating system's
console font related documentation for information.
Non-CDDB text (such as headings, labels and error
messages) are not localized in cda.
NOTES
Not all platforms and CD drives support all the features
of cda. For example, some drives do not support a
software-driven volume control. On these drives the cda
volume and balance commands may have no effect, or may
simply change the volume between full mute and maximum.
Similarly, the lock, disc, index, and route commands of
cda may not have any effect on drives that do not support
the appropriate functionality.
The lame(1) MP3 encoder program must be installed on your
system in order for cda to perform CD ripping to .mp3
format files.
Your copy of the cda executable must be compiled and
linked with the OggVorbis encoder libraries in order to
perform CD ripping to .ogg format files.
ENVIRONMENT VARIABLES
The LANG environment variable sets the default character
set. See "LOCALIZATION" above.
The LAME_PATH environment variable may be used to specify
the path to the lame(1) MP3 encoder program.
The AUDIODEV environment variable may be used to specify
an alternate audio device when running cda in the cdda-
play mode. The default audio device is write method
dependent as follows:
AIX write method: /dev/paud0/1 (PCI audio)
AIX write method: /dev/baud0/1 (MCA audio)
ALSA write method: plughw:0,0
HP-UX write method: /dev/audio
Linux/OSS write method: /dev/dsp
OSF1 write method: 0
Solaris write method: /dev/audio
In addition, with the OSS and ALSA write methods, the
MIXERDEV environment variable may be used to specify the
PCM mixer channel device. The default is /dev/mixer for
OSS, and default for ALSA.
FILES
$HOME/.cddb2/*
$HOME/.xmcdcfg/*
XMCDLIB/cdinfo/*
XMCDLIB/config/config.sh
XMCDLIB/config/common.cfg
XMCDLIB/config/device.cfg
XMCDLIB/config/.tbl/*
XMCDLIB/config/*
XMCDLIB/help/*
BINDIR/cda
MANDIR/cda.1
/tmp/.cdaudio/*
RELATED WEB SITES
Xmcd/cda web site: http://www.amb.org/xmcd/
Gracenote web site: http://www.cddb.com/
Xmmix web site: http://www.amb.org/xmmix/
LAME MP3 encoder: http://www.mp3dev.org/
OggVorbis: http://www.xiph.org/ogg/vorbis/
Sox audio format conversion utility:
http://www.spies.com/Sox/
SEE ALSOxmcd(1), xmmix(1), X(1), lame(1), sox(1)
Xmcd's README and INSTALL files
AUTHOR
Ti Kan (xmcd@amb.org)
AMB Laboratories, Sunnyvale, CA, U.S.A.
Cda also contains code contributed by several dedicated
individuals. See the ACKS file in the cda distribution
for information.
Comments, suggestions, and bug reports are always welcome.
v3.2.0 02/11/18 CDA(1)
