Okay for Sound
- Bliain: 1946
- Tír: United States of America
- Seánra: History, Documentary
- Stiúideo: Warner Bros. Pictures
- Eochairfhocal: vitaphone
- Stiúrthóir:
- Caitheadh: John Barrymore, James Cagney, Anna Case, Thomas A. Edison, Mischa Elman, William H. Hays