Strange file names

[Renaud (Ron) Olgiati]

After upgrading to Kubuntu, I find some file names (mainly those of German 
traditional tunes on mp3) with characters that do not disply properly.

Any simple cure ?
 
TIA,
 
Ron.
--
                 O Lord, grant that we may always be right, 
               for Thou knowest we will never change our minds.
                                    
                   -- http://www.olgiati-in-paraguay.org --