I found this terrific CD, and two dozen others from the same (deservedly) legendary series, at one of my favorite Chinatown DVD/CD stores on Bowery. The shop, sadly, has since closed, though not before I happily absconded with their entire stock of these.
And, more upsetting, I don't know what's become of this series, either. Most that were previously available through yesasia are out of print, and have been for years. There is no website anywhere that I could find from the publisher. From what I can tell, this project has been abandoned.