It's easy enough to convert it from the LP. It looks like that may be the only way to do it. I was curious and dove down the search engine rabbit hole. Here at Mudcat I did a search on this album and find you participating in a much earlier thread on this topic also, where, on June 17, 2005, Dick Greenhaus commented that it was on CD from Smithsonian Folkways. Here. A search for that CD turns up absolutely nothing. Good luck finding the digital version, or making it yourself.