On June 22nd 2011, the cd of the Suster Bertken-opera was released on the Attacca label, and is now commercially available through webstores everywhere. (search for 'Attacca CD2011-126 Zuidam Bertken', or something along that line)
Here are some quick links, to make life easy for you, :
www.askoschoenberg.nl
www.bol.com
more info on Suster Bertken
music sample
'Mi quam een schoon geluit'
