Detroit DJ Kenneth Thomas once opened a show for superstar Paul Oakenfold, and Oakenfold liked him so much that he brought Thomas into his circle of jet-setting superstar dance-music machers. But before he globe-hopped, Thomas played Cleveland whenever he could, and he's always glad to return. This week, he'll headline Euronight, one of Cleveland's biggest dance nights. Euro techno is a little trancey, a little progressive, a little house -- and a lot of fun. And fun, oddly, has become surprisingly scarce in dance music.