All of those interviews are in english (or another non-german) language.

Some of those interviews were published in the german-language Biertaucher-podcast, some exist on Youtube (audio and visual), for some there exist photos on flickr, but some just sit unheard and unpublished on the server. All interviews are free to use and creative-commons-share-alike licensed. For details and questions, ask horst.jens@spielend-programmieren.at