Almost all of the Smithsonian Folkways recordings are available on YouTube and Spotify, including the recordings from Folk-Legacy Records. YouTube does pay royalties. Not much, but it's the name of the game nowadays.

Sharon Mountain Harmony: https://www.youtube.com/playlist?list=OLAK5uy_lQXVbSWL4Fgyrp8YH1PLMKpZK9cktiZbY