If you decide to follow my settings, I'm not responsible for anything that happens if you decide to go careless and become a priceless dumb. All commands are done in Linux PC using corresponding CLI programs. In Windows, just add .exe after CLI program name.
I prefer maximum compression as possible with replay gain applied. This command below will silence all warnings, especially when dealing with Hi-Res audios: a.wav: WARNING: Legacy WAVE file has format type 1 but bits-per-sample=24
$ flac --totally-silent --delete-input-file --replay-gain -V8 .wav