Fixing FLAC file volume involves either non-destructive ReplayGain metadata tagging or destructive, permanent volume adjustment, depending on player support. ReplayGain is recommended for lossless, reversible adjustments, while tools like Audacity, dBpoweramp, and metaflac are used for permanent changes. For more details, visit Audiophile Style . ReplayGain in FLAC - Audio Processing - Audacity Forum
: Requires a music player that supports ReplayGain tags (like foobar2000, Plex , or VLC ). 2. Alternative: Permanent Normalization (Destructive) flac gain fix