 An active group of collectors makes digitally available, via CD or download, large collections of programs.Unlike film, television, and print items from the era, the copyright status of most recordings from the Golden Age of Radio is unclear.This is because, prior to 1972, the United States delegated the copyrighting of sound recordings to the individual states, many of which offered more generous common law copyright protections than the federal government offered for other media (some offered "perpetual" copyright, which has since been abolished; under the Music Modernization Act of September 2018, any sound recording 95 years old or older will be thrust into the public domain regardless of state law).