The invention relates to porous matrices based on a biologically compatible polymer or polymer mixture, to a cell implantation that is established on said matrices and to additional cell implantation based on cell mixtures of hepatocytes and islets of Langerhans. The extracted audio features are compared to stored audio templates that include ranges andor values for certain features and are tagged for specific ranges andor values. The invention also includes rendering software to retrieve the metadata from the data structure and to identify media files to render. The golf ball-forming composition is water soluble and biodegradable.