The -a flag treats the folder as an album. r128gain writes the same REPLAYGAIN_* tags as metaflac , but using a psychoacoustic loudness model that better matches human hearing. This is the for anyone building a library in 2024 and beyond.
find /path/to/music -name "*.flac" -print0 | xargs -0 metaflac --add-replay-gain
Select files → Right-click → → Scan selection . Permanent Fix Audacity flac gain fix
(But be careful—this treats your entire library as one giant "album," which is rarely correct. Always scan per album folder.)
The easiest GUI tool; just right-click files → ReplayGain → "Scan selection as albums (by tags)" [5, 25]. Linux/macOS/Win The -a flag treats the folder as an album
Dealing with inconsistent volume levels across your FLAC library is a common frustration, especially when transitioning from older masters to modern "loud" tracks. Because
: Import your file, go to Effect > Volume and Compression > Normalize , and set the peak amplitude (usually -1.0 dB is standard). find /path/to/music -name "*
Click the "Update File Tags" button. The software will now write REPLAYGAIN_TRACK_GAIN , REPLAYGAIN_TRACK_PEAK , REPLAYGAIN_ALBUM_GAIN , and REPLAYGAIN_ALBUM_PEAK tags directly into the FLAC metadata.