Lame

From S23Wiki

A popular mp3 encoder.

LAME version 3.96.1 
http://lame.sourceforge.net/

usage: lame [options] <infile> [outfile]

    <infile> and/or <outfile> can be "-", which means stdin/stdout.

Try:
     "lame --help"           for general usage information
 or:
     "lame --preset help"    for information on suggested predefined settings
 or:
     "lame --longhelp"
  or "lame -?"              for a complete options list