title: mp3 Quality and size manipulation in PHP
body: <p>I'm looking for a way (a class, sorcerry) to reduce the size of MP3 file.
  I know MP3 is already optimized, for minimal size, so I wonder if I can somehow reduce the quality (maybe bitrate) so i'll have a tradeoff between quality and file size....</p>
  
  <p>My server side language is PHP,
  Thanks alot,
  Yanipan</p>