LONDON (Reuters) - Muse's "Survival" will be the main official song for the London 2012 Olympic Games, the British rockers announced on Wednesday. Lead singer Matt Bellamy wrote the track "with the Olympics in mind. It's about total conviction and pure determination to win," the group said on its website. The tune will be played throughout the July 27-August 12 Games, including when athletes enter the stadium, in the lead-up to medal ceremonies and also as the theme for international television coverage. It will air in public for the first time on the publicly funded BBC Radio 1 at around 2. ...