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AACGain

AACGain is a modification to Glen Sawyer's excellent mp3gain program. It supports AAC (mp4/m4a/QuickTime) audio files in addtion to mp3 files. AACGain normalizes the volume of digital music files using the Replay Gain algorithm. It works by modifying the global_gain fields in the mp4 samples. Free-form metadata tags are added to the file to save undo information, making the normalization process reversible. AACGain uses the same command-line user interface as mp3gain. AACGain also integrates with iTunes using my iGain GUI.

MP3Gain

MP3Gain

A free automatic mp3 volume normalizer. MP3Gain analyzes and adjusts mp3 files so that they have the same volume. There is no ...

QMP3Gain

QMP3Gain

Graphical user interface front end supporting MP3Gain engine which analyzes and losslessly adjusts mp3 files to a specified ta ...