-*- outline -*-

* Suitable convertors?

  $ sudo apt-get install ffmpeg
or
  $ sudo apt-get install sox

* List of sox supported format.

See sox(1).

* List of ffmpeg supported format.

  $ ffmpeg -formats

* How convert amr to ogg/mp3?

  $

* How easy convert between mp3/wav/ogg?

  $ sox in.mp3 out.ogg
  $ sox in.ogg out.wav
  ... etc

* How convert flac to mp3?

  $ flac -c -d $file.flac | lame -m j -q 0 -V 0 -s 44.1 - $file.mp3

* How convert wma to mp3?

  $ mplayer -vo null -vc dummy -af resample=44100 -ao pcm:waveheader $file.wma
  $ lame -m s audiodump.wav -o "$file.mp3
  $ rm audiodump.wav

* How convert m4a to mp3?

  $ faad -o - $file.m4a | lame -V 0 - $file.mp3