XM satellite radio started its "IT" programming this week. "IT" is a decade by decade format which programs the top chart hits, year by year. The '50s finish up on Thursday followed by the '60s. For younger listeners, it's a chance to hear a lot of music that commercial radio "consultants" and "testers" determined that you didn't want to hear on your "oldies" station for the last 35 or so years. And for those who don't have a good Oldies station in their market ( which would be a whole lot of us), it's a chance to hear what Oldies radio should really sound like. Check out www.xmradio for more info.