The RCC/Jackson County Library Catalog defaults to a page with a basic search box. To browse operas or ballets on DVD, type “opera DVD” or “ballet DVD” – don’t type the quotation marks. This will bring up several good titles. There will also be some (like Phantom of the Opera) that will also be in the results. One can also type “opera” in the basic search box and in the scroll down box for “format” below that, and choose DVD. This is going to bring a lot more results, but also a lot more irrelevant ones. If you have a particular title in mind, like the Nutcracker, you are better off typing in the title and choosing the format as DVD. If you are searching for CDs the same kind of searching can be done.
If you are having difficulty ask a librarian for help!