WARNING: There is a confirmed bug that causes damage to some audio files when
this tool is used to modify the original wave file. See Issue #2 at the github
source for this tool.
This is a command line utility to calculate the ReplayGain adjustment needed
to bring an audio file to a normalized playback level relative to other audio
files that are also adjusted for the ReplayGain standard.
Without arguments, the command only outputs the calculation, it does not
modify the wave file. You can have it modify the wave file but doing so may
result in changes that can not be reversed, it is a good idea to make a copy of
any wave files you plan to modify.