mp3gain: mp3gain (analyzes and adjusts mp3s so that they have the same volume)
mp3gain: 
mp3gain: MP3Gain does not just do peak normalization, as many normalizers do.
mp3gain: Instead, it does some statistical analysis to determine how loud the
mp3gain: file actually sounds to the human ear. Also, the changes MP3Gain makes
mp3gain: are completely lossless. There is no quality lost in the change
mp3gain: because the program adjusts the mp3 file directly, without decoding
mp3gain: and re-encoding.
mp3gain: 
mp3gain: 
mp3gain: