Another option some are using is tuning into a match on the radio. If the station broadcasting has a decent booth or is doing a remote commentary, the noise of the horns is drowned out considerably or not present at all. Just use that for the commentary whilst watching the TV. I know BBC were looking at a vuvuzela free audio stream in their TV broadcasts(which you could activate by a remote button press) but not sure if anything firm has been decided yet.
Im amazed broadcasters didnt think of that well in advance. Even the US broadcasters should have realised when they were there for the confeds cup last year.
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Anyway, DAY 7 - Looks very interesting
The teams that didn't get a win in R1 really need to pull their finger out...
ARGENTINA v KOREA: 2-0
GREECE v NIGERIA: 0-1
FRANCE v MEXICO: 1-2
GERMANY v SERBIA: 2-0