Complex sentence: During that summer they played a large festival with American punk rock band Rancid, and released a tour documentary about their first USA tour, the Fiend Fest. It featured artwork by an American fan, Tony O'Farrel.
Split into simpler sentences: During that summer they played a large festival with USA punkers Rancid. They also released a tour documentary about their first USA tour, the Fiend Fest. It featured artwork by an American fan, Tony O'Farrel.