\opt{swcodec}{
\section{Frequency}\index{Frequency}
  This option sets output samplerate of the decoder. The default is
  44.1 kHz which is what most people need. In case most of your digital
  library is encoded with 48 kHz sampling rate You may be interested
  to change the default to avoid unnecessary resampling during decode.
  \note{It is worth stressing that this option doesn't affect whether
    file will be played or not. It affects whether output from decoder
    will be resampled or not. If it is unclear for You that means
    You probably don't need to tweak this setting.}
}%\opt{swcodec}