Briefly: U2 on ITMS, iPod killing, Firefox on Mactel

In Brief: Within hours of London's opening Live 8 performance by U2 and Paul McCartney, Apple begun offering the opening performance of The Beatles track "Sergeant Pepper" (sung by McCartney with U2) via the iTunes Music Store.... Two teenagers are under arrest Sunday on suspicion of killing another teen for his iPod.... Apple's iPod and other portable digital media devices have become as useful to criminals as they are to the general public.... One website has posted photos of what it says is iTunes mobile software running on a Motorola E790 phone, while AppleInsider says that iTunes 4.9 already recognizes some Motorola phones as an iPod phone.... Mozilla.org developers, with the help of Apple, have ported the Firefox browser to Intel-based Macs.