MP3 file volume change

[Lee Schierer]

Is there any way to adjust the volume of a group of MP3 files so they all play at the same volume without adjusting the volume control of the player? I have a number of songs that I have on my GPS to play when we go through dead zones with no radio coverage (at least not stations that I care to listen to) and I constantly have to turn the volume up to hear the song or down because the current song was recorded louder than the previous one.

[Brian Effinger]

Google a program called MP3Gain. I haven't used it in a while, but I think that it was free. It analyzes the files and then sets the volume of each one to a predetermined level.