There's the government's official employment and unemployment report today, but what about prospects for the kind of jobs you do online? Elance, a company that uses the web to fix up freelancers with jobs has a 2013 forecast with a bold prediction: One out of four college students in this new year will earn money through online jobs. If we said there's a machine that makes music by itself, you'd be unimpressed. But what if there's a robot that will improvise music along with you?