KVirc highlight settings

Go Settings > configure KVirc > IRC > Tools > Alert/highlights
Check the settings there, i got word highlighting enbabled for !sf    !rejoin
Also make sure "higlight messages containing my nickname" is checked.

Then goto Scripting > Edit Events > On Highlight > Default
put something like this in that field :

if ( $4 == $me )
	{ snd.play /usr/share/sounds/KDE-Im-Phone-Ring.ogg; }
elseif ( $4 == "!sf" || $4 == "!rejoin" )
       { snd.play /usr/share/sounds/KDE-Im-Irc-Event.ogg; }