How to do that? How to use that smart DJ thing (is it supposed to find new music for me)?
Yes. While playing songs there should be an icon that looks like a play button with waves in front of it. Tap that and it should find new music for you similar to what you're listening to. Or, tap the more button (...) at the bottom right bringing up the context menu and "Play Smart DJ Mix" should be an option.
Thanks. But I tried for many times and it always says no enough information - any suggestions?
I've tried Beethoven and Mozart, neither works
Try this. When you go into a screen with the Smart DJ icon, don't tap that. Instead tap "..." and bring up the context menu. Then tap the Smart DJ Mix setting there. I was getting the same error you were previously. Tapping the setting in the app bar didn't give me that error.