MP3Gain

[beamish]

MP3Gain

MP3Gain analyzes and adjusts MP3 files so that they have the same volume. MP3Gain does not just do peak normalization, as many normalizers do. Instead, it does some statistical analysis to determine how loud the file actually sounds to the human ear. Also, the changes MP3Gain makes are completely lossless. There is no quality lost in the change because the program adjusts the mp3 file directly, without decoding and re-encoding.

MP3Gain

 

[TrainableMan]

I use mp3gain and it's definitely safe. You know how some songs are quiet and others loud, well it simply adjusts the sound level of an entire folder to a consistent level. That way you don't have to constantly adjust the volume of your speakers or mp3 player.