50wasn't joking when he said he could hear your "Irregular Heartbeat." His SMS Audio will be building Intel-powered biometric headphones. Called BioSport In-Ear, the buds connect to your cell phone and processes software, giving you your heart rate and counting your steps. The new fitness-focused headphones are set to hit retail in the fourth quarter and may prove to be a big notch in Fif's money clip. Read on for more big business deals in music.