Complex sentence: Carroll Todd aka Toddy (Robert Preston) an old, gay performer at Chez Lui in Paris, sees Labisse (Peter Arne), the club owner, auditioning Victoria Grant (Julie Andrews) for position of a singer.
Split into simpler sentences: Carroll Todd aka Toddy (Robert Preston) is an old, gay performer at Chez Lui in Paris. Toddy goes to Chez Lui and sees Labisse (Peter Arne), the club owner, auditioning Victoria Grant (Julie Andrews) for position of a singer.