I emailed Coke and they wrote back with a kind reply that i've attached below:
Thank you for contacting The Coca-Cola Company, Mr. x. We appreciate your interest in our ad.
The song is "Way of the Light" by the band, "Gift of Gab". It was on the band's most recent album, "Fourth Dimensional Rocket Going Up", which was released in January '04.
If you ever have any more comments or questions, feel free to contact us again.
Industry & Consumer Affairs
The Coca-Cola Company