howto:introduce skips in songs

[nix]

i need to remove the words like F*** and S*** in an mp3 file, how do i do it the professional way? all these days i used to cut that portion and it would sound really bad. but the skips in radio are good, only the vocals are removed...not the music. if not that good, atleast suggest something better than the cut operation.
thanks in advance,

 

[iMav]

use soundforge and select the part u want to mute and fade it ...