: Run a scan to see which files are too quiet or too loud.

Truth: Player-based normalization (like Spotify’s "Normalize Volume") only works inside that player. It does not alter the file. If you burn a CD, upload to YouTube, or share files, the disparity returns. A full version permanently fixes the file.

If you are looking for a "full version" tool to balance your library, here is the breakdown of why it matters and where to find the best features. Why "Normalizing" is the Pro Move Peak Normalization:

How frustrating is it to normalize your songs only to lose the album art, artist name, and track number? Free tools often strip metadata. The full version preserves existing ID3 tags and can even write new gain values to the "replay gain" field without altering the original audio data.