Audiences attending the Delaware Symphony Orchestra’s 2024-25 season will have a say in who is chosen as its new music director. The symphony’s 119th season will showcase the four finalists for the job: Mélisse Brunet, Filippo Ciabatti, Michelle DiRusso, and Taichi Fukumura,  Each will conduct a classical concert, and audience members will be surveyed afterward about how they thought the …