standardize volume across audio files

version 2.0.3 windows 7:

Can I standardize the volume of multiple audio files? They all have varying amplitudes, and I want to make them all comparable.

Is this question about the same job as these two posts?
https://forum.audacityteam.org/t/export-labels-from-multiple-files-to-one-text/31436/1
and
https://forum.audacityteam.org/t/automate-creating-labels/31437/1