The Library of Congress is sharing its National Recording Preservation Plan on Wednesday, outlining its strategy for safeguarding America’s sound recordings for future generations of listeners.

The congressionally mandated plan arrives after more than a decade of cooperation between the library and its National Recording Preservation Board, which includes composers, musicians, archivists, librarians, musicologists and other figures in the recording industry.

“As a nation, we have good reason to be proud of our record of creativity in the sound-recording arts and sciences,” James H. Billington, librarian of Congress, said in a statement. “However, our collective energy in creating and consuming sound recordings has not been matched by an equal level of interest in preserving them for posterity.”...