there is a great little program called mp3 gain it really cleans up the mp3 files, takes out the distortion. And will do a batch of files in a folder or even a whole hard drive.

"Tired of reaching for your volume knob every time your mp3 player changes 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."
http://mp3gain.sourceforge.net/

Did I mention it's free

[This message has been edited by mikeathome1 (edited 05-22-2008).]