I am still confused about this one, because it doesn't seem like a company, let alone a world renowned console manufacturer, could make a mistake like this. According to this
source, just as the Sony representative was about to give his keynote speech at the Malaysia PS3 launch, Sony played the Zelda theme. Click the below link to see the video and source.
News : Sony deals self massive damage, plays Zelda theme at Malaysia PS3 launch [PS3] - from GamePro.com
Just wow. That's all I can say. Someone at Sony is going to be out of a job by the end of the week.
*UPDATE*
According to G4TV's X-Play Gaming Update, the Zelda song was played not once, but
twice at this convention. If Sony was aware of that issue, you'd think they would have not played it the second time. Anyway, I'll leave it up to you.