SAN FRANCISCO — It's been a busy weekend mixed with football and politics for the Red Hot Chili Peppers, and bassist Flea wouldn't have it any other way."I'm always ready to play my heart out," Flea told The Associated Press backstage on Saturday night before the band took the stage at a San Francisco venue as part of the Super Bowl weekend festivities."I'm coming here, and I'm going to rock like a feral beast.