• Burn a data CD from an ISO image file (man burncd for details):
  

  burncd -f /dev/acd0 -s 4 -e data cd-image-file.iso fixate

• Read the contents from a data CD to an ISO image file:
  

  dd if=/dev/acd1 of=cd-image-file.iso bs=2048

• Create an ISO image file from a directory:
  (This requires mkisofs, the port was in /usr/ports/sysutils/mkisofs, now mkisofs is included in the port /usr/ports/sysutils/cdrtools.):
  

  mkisofs -o cd-image-file.iso -J -R /path/to/directory

  The above command creates an image with both Joliet and Rock Ridge extensions.
  See the cdrtools port for details (mkisofs was a port of its own, now intergrated into cdrtools.
  I have a DVD player with the options to read data CDs containing MP3 files, but some files couldn't be read with the Joliet extensions.
  If you experience the same problems, try without the Joliet extensions:

  mkisofs -o cd-image-file.iso -R /path/to/directory

    # cd /dev
    # sh MAKEDEV ac0t99
    # sh MAKEDEV ac1t99
		    

• Read each audio track from an audio CD to WAV files...
  
  FreeBSD 4.x:

  dd if=/dev/acd1t1 of=track1.wav bs=2352
  dd if=/dev/acd1t2 of=track2.wav bs=2352
  dd if=/dev/acd1t3 of=track3.wav bs=2352
  .
  .
  .

  FreeBSD 5.x:

  dd if=/dev/acd1t01 of=track1.wav bs=2352
  dd if=/dev/acd1t02 of=track2.wav bs=2352
  dd if=/dev/acd1t03 of=track3.wav bs=2352
  .
  .
  .

• ... or use a small script if you are lazy like me (for FreeBSD 4.x) ...
  

  #!/bin/sh
  # Change device to acd1 if needed
  cdrom=acd0
  track=1
  finished=0
  while [ $finished = 0 ]; do
    echo "Reading track $track..."
    trackdevice=$cdrom't'$track
    filename='track'$track'.wav'
    command="dd if=/dev/$trackdevice of=$filename bs=2352"
    $command
    finished=$?
    track=`expr $track + 1`
  done
  

• ... or use 'cdda2wav' from the port /usr/ports/sysutils/cdrtools to rip each CD track:

  cdda2wav -D /dev/acd0 -t 1
  lame -h -b 128 audio.wav track1.mp3
  cdda2wav -D /dev/acd0 -t 2
  lame -h -b 128 audio.wav track2.mp3
  cdda2wav -D /dev/acd0 -t 3
  lame -h -b 128 audio.wav track3.mp3
  .
  .
  .
  

• ... or read each audio track from an MP3 file using the XMMS standard plugin Disk Writer to convert them from MP3 files to WAV files...
  
  
• ... or convert them directly to RAW files:
  NOTE: Changes 2003-11-11 in this page (thanks to Pieter de Boer):
  To avoid a little 'tick' at the start of every song (the 'tick' is the .wav header), do NOT use the .wav files directly to burn your audio CD, convert them to .raw files first.
  Read more about this issue (FreeBSD Handbook updates for 'burncd') at http://lists.freebsd.org/pipermail/freebsd-doc/2003-April/000278.html
  .
  You have two options to create the .raw files:
  • a. Use 'sox' (port in /usr/ports/audio/sox) to convert .wav to .raw:

    sox -V -t wav -r 44100 -w -s -c 2 track1.wav track1.raw
    sox -V -t wav -r 44100 -w -s -c 2 track2.wav track2.raw
    sox -V -t wav -r 44100 -w -s -c 2 track3.wav track3.raw
    .
    .
    .				
    

  • b. Use 'mpg321' (port in /usr/ports/audio/mpg321) to convert .mp3 to .raw:

    mpg321 --stdout sometrack.mp3 >track1.raw
    mpg321 --stdout anothertrack.mp3 >track2.raw
    .
    .
    .
    

  • ... and finally burn all raw audio tracks to a CD:
    

  burncd -f /dev/acd0 audio track1.raw track2.raw track3.raw ... fixate

• burncd -f /dev/acd0 blank

• burncd -f /dev/acd0 erase