How Many 'Olympic' Audio Channels Are There?

As in mentioned in this video by AFP Español, there is usually a lot of focus on the more than 1,000 cameras in use during the olympic games, but did you know that more than 3,600 microphones are actually in use throughout the olympic sights to cover the audio side of the broadcasts?
The video is in Spanish, but if your Spanish is limited or just doesn't exist, simply add subtitles and change the language.

With more than 40 speakers at full volume in a single system, noise naturally becomes a critical factor. We were pleased to learn that at the Ambisonics dome at The Royal Danish Academy of Music, an AX32 made the difference between compromises and a dream come true:
"We built a much smaller version of this system, using another converter and also cheaper speakers, and there were just compromises to be made. We had to turn down the converters and live with a certain noise floor. But now, we have it just the way we dreamed of without any noise whatsoever."
(Jesper Andersen, Associate Professor and Head of Tonmeister Studies, Royal Danish Academy of Music, Copenhagen)

These lyrics fit quite well as the caption for this photo:
"That's me in the corner. That's me in the spot-light."

Which band topped the charts with that song,
and what's the name of the song?