Hi, I did some normalization of some mp3 files and on some got the warning: sox WARN mp3-util: MAD lost sync The resulting files seem to be ok, i.e. they seem to play from beginning to end (I have the pre normalization version of the file for comparison) Also, the resulting files are much smaller. Sometimes megabytes smaller. Whats up with that? And, does normalizing an mp3 multiple times degrade the audio? Regards, Mac