I'd like to know...

Was wondering that myself and a friend of mine who knows all about the great band told me that it's in fact the theme for the sports team "Kitee's Ball" and the track is titled "Kiteen Pallo" (=straight translation in finnis) and you can download it from the official Nightwish site under the title End of Innocence -> Kiteen Pallo. here's the link which SHOULD work:

http://www.nightwish.com/fi/files/audio

happy hunting :)