NEW  YORK  � When  Whoopi  Goldberg  was offered a six-week stint in the Broadway  musical "Xanadu,"  she thought she had plant the pure way to spend her summer. "The  thing I  forgot to ask is, 'When  does it commence?' "
In  fact, Goldberg  stepped into the hit show July  29, iI days in front wrapping her first season as moderator of "The  View"�  which meant disbursement weeks juggle the popular morning programme with rehearsals for "Xanadu."  Through  Sept.  7, she's filling in for actress Jackie  Hoffman  as the goddess Aphrodite  and Calliope,  the envious sister of the fair muse Kira  (Kerry  Butler).
 
 
 
 
 
The  dual purpose isn't the lead simply "I  like working," Goldberg  says. A  supporting
