To listen to the hidden track (that of the creator of the player) follow the instructions below:
1) Go to www.lollapalooza.com
2) Click on Lineup
3) Click on any of the bands, for instance "Pearl Jam"
4) *A popup mp3 player will show
5) Click on the gray title bar of the player to activate it.
6) Type the following keystokes exactly (Note, you will not see/hear anything until you have simply typed the keystrokes)
[Up Arrow] S C H O E N I N G
That is, click the 'Up Arrow' key, then immediately start typing S C H O E N I N G