You know Ninja Tune and everything about them and exactly the type of music they put out and why and it"s, y"know, cool and everything but? Well, you don"t. The latest "Ninja Cuts" is number five in a series of classic compilations which have studded Ninja"s 18 years of existence. And, like its predecessors, "You Don"t Know" serves as a signpost of both where the label has come from and where it"s heading.