LIFEHOUSE Inspiration and experimentation lead to a sound shake-up on their latest    Since their 2001 monster hit “Hanging by a Moment,” Lifehouse has sold more than 15 million albums worldwide. But the big numbers are just a byproduct of the band’s vision. “We’ve been a pretty insulated group,” says lead singer Jason Wade. “We’re on the same label as these acts like Black Eyed Peas, U2 and Lady Gaga, but we do our own thing.”...