Usage: vorbisgain [options] input.ogg [...]

OPTIONS:
  -a, --album          Run in Album (Audiophile) mode.
  -g, --album-gain=n   Set Album gain to the specified value. Implies -a
  -c, --clean          Remove any VorbisGain tags. No gains are calculated
  -C, --convert        Convert VorbisGain tags from old to new style
  -d, --display-only   Display results only. No files are modified
  -f, --fast           Don't recalculate tagged files
  -h, --help           Print this help text
  -n, --no-progress    Don't show progress, just print results
  -q, --quiet          Don't print any output (except errors)
  -r, --recursive      Search for files recursivly, each folder as an album
  -s, --skip           Skip non-Vorbis or faulty files
  -v, --version        Display version number and exit

INPUT FILES:
  ReplayGain input files must be Ogg Vorbis I files with
  1 or 2 channels and a sample rate of 48 kHz, 44.1 kHz,
  32 kHz, 24 kHz, 22050 Hz, 16 kHz, 12 kHz, 11025 Hz or 8 kHz.
  Wildcards (?, *) can be used in the filename.