“The copying of Broadway productions — or, more precisely, what constitutes the copying thereof — is a suddenly prominent issue that pits the economic interests of theater directors and choreographers against the interests of writers and composers. Right now, it’s the writers and composers who get the bulk of the royalties when Broadway shows such as ‘Urinetown’ or ‘The Producers’ are licensed to other producers. But… directors are now after a piece of that lucrative pie.”