anchor: love.sound.newDecoder
  Attempts to find a decoder for the encoded sound data in the specified file.
  decoder = love.sound.newDecoder( file, buffer )
  file File The file with encoded sound data.
  buffer (2048) number The size of each decoded chunk, in bytes.
  decoder Decoder A new Decoder object.
  decoder = love.sound.newDecoder( filename, buffer )
  filename string The filename of the file with encoded sound data.
  buffer (2048) number The size of each decoded chunk, in bytes.
  decoder Decoder A new Decoder object.