I just found this on the Smithsonian website re: Folkways (took some searching):
"As a condition of the acquisition, the Smithsonian agreed that virtually all of the firm's 2,168 titles would remain "in print" forever--a condition that Smithsonian Folkways continues to honor through its custom order service. Whether it sells 8,000 copies each year or only one copy every five years, every Folkways title remains available for purchase."
I'm not home to check whether the one I got was a CD-R but I see you can also download (even single tracks!) for about half the price of a cd.
Wouldn't it be nice if every label had this policy.