OZZY OSBOURNE's ringtone for "Crazy Train" has been certified platinum after having been downloaded a million times, according to the RIAA (Recording Industry Association of America).Eighty-four titles have been certified gold, 40 platinum, and four multi-platinum. What's striking is how completely hip-hip and/or youth-oriented performers dominate the list. For older acts among the multi-platinum and platinum acts, you've got AC/DC (for "Back In Black") and OZZY OSBOURNE. Any original recording that's been downloaded 500,000 times or more for a ringtone the RIAA now certifies as gold; a million times, platinum; and two million, multi-platinum. An Ozzy "insider" recently revealed to Rockdetector.com that although Osbourne is making several Ozzfest appearances this summer, the BLACK SABBATH frontman is "simultaneously working on two album projects (one being released in November) and he's about to head out on tour this summer followed by 10-month world tour which commences in December."