If you ask google for mplayer sinesuppress you get a whole page of command lines that remove vuvuzela sounds from broadcasts, for example: http://verbo.se/open-

If you ask google for mplayer sinesuppress you get a whole page of command lines that remove vuvuzela sounds from broadcasts, for example: http://verbo.se/open-source-vuvuzela-killers http://verbo.se/open-source-vuvuzela-killers [edit: fixed link, this supid cell phone doesn't support copy&paste]