Since it is a Python-based utility, you don't "download" a traditional .exe file. Instead, you install it via the Python Package Index (PyPI). Step 1: Install FFmpeg (Prerequisite)

Maintaining consistent audio levels across a library of media files is essential for professional-quality content. While the standard FFmpeg project offers powerful filters like loudnorm , they often require a complex two-pass process to achieve the best results.

Before using the wrapper, you must have a recent version of FFmpeg (v5.x or v6.x recommended) installed in your system's PATH. Audio Normalization for Python/ffmpeg - GitHub

Normalizing hundreds of files simultaneously while maintaining the original video, subtitle, and metadata streams. How to Download and Install ffmpeg-normalize

Traditional methods that adjust levels based on the highest signal point or average power.

Mastering Audio with ffmpeg-normalize: A Complete Download and Setup Guide