Portable MP3Gain is the portable edition of MP3Gain, can analyze and adjust your MP3s with this utility. It can run from a USB flash drive or any other portable device.
MP3Gain is an application which offers you the possibility to analyze mp3 files to determine how loud they sound to the human ear. It can then adjust the mp3 files so that they all have the same loudness without any quality loss. This way, you dont have to keep reaching for the volume dial on your mp3 player every time it switches to a new song.
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.

The license of this software is Free, you can free download and free use this audio utility software.