You can access millions of streaming audio and video tracks for free through Emory Libraries from these sources:
Catalog of the holdings of over 11,000 libraries in the U.S. and abroad, including books, sound recordings, videos, and other materials.
Use WorldCat to find out what exists outside Emory.
You may be able to borrow these items through Interlibrary Loan.
Use discoverE to find audio and video at Emory. Here's a basic search for audio (when you don't know the work's uniform title).
You can look at one of your hits to find out what the work's uniform title is. Then search on that title to find recordings that your previous search didn't turn up.