Here is the critical warning section. Searching for on Google or torrent sites is a minefield.
If you manage to secure the legitimate full version, here is what you get out of the box: sound normalizer 87 full free
If you want a powerful, completely free (open-source) sound normalizer, these are the industry standards: Here is the critical warning section
on how to normalize audio using one of these free tools like Audacity? completely free (open-source) sound normalizer
: It is "lossless," meaning it adjusts volume without re-encoding the file or losing quality. 3. VLC Media Player