The website is http://worldslargestblockparty.com/.

Go to the Buy Tickets link. You have to register to buy tix. Below is the information:

Tickets for Friday Night, July 10 Benefit - COLLECTIVE SOUL AND GAVIN DEGRAW at $35 per ticket (includes 5 beverages)
VIP Area sold out for Friday, July 10 $35.00 Quantity

Tickets for Saturday Night, July 11 Benefit - BEN FOLDS at $35 per ticket (includes 5 beverages)
VIP area sold out for Saturday, July 11 $35.00 Quantity

Two-Night Pass for Friday, July 10 & Saturday, July 11 at special price $60 per ticket (includes 5 beverages per night) $60.00