SAN JOSE -- Apple Inc.'s iTunes Store started selling thousands of songs without copy protection Wednesday, marking the trendsetting company's latest coup and a model for what analysts say will likely become a pattern for online music sales.Three iPod protection units fend off scratches, water and even the prying eyes of strangers. The iBagz from iFrogz seals the MP3 player inside a water-tight bag to keep the unit dry from errant drips and splashes. iStyles fits over a Video iPod's screen, preventing those to your left and right from taking a gander at whatever it is you're watching.By Nic Fildes Last.FM, the London-based music-recommendation internet site, has been snapped up by the US media giant CBS for [pound]140m in cash, the largest-ever acquisition of a UK social networking company.