mp3 clipping
There is a program called 'Mp3Gain'. You can use this program to permanently remove clipping and keep volume differences between each track on an album. Basically:
Open MP3 Gain, adjust:
Options\Each Folder Is Album (tick)
Options\Advanced\Enable Maximizing Features (tick)
Then do an Album/Radio Analyze,
If Any Mp3 file in Mp3gain has a "Y" (yes) under the clipping bar then, Go to the "modify gain" menu, "Apply max no clip gain for album".
If you only want to modify files with clipping and don't care about keeping volume differences between each track on an album you "Apply max no clip gain for each file" instead of "Apply max no clip gain for album".