Tomorrow (27th October 2015) I will be talking to second year Folklore students about metadata and digital projects in folklore and oral history archives. Here are the slides as hosted on slideshare.
The information sheet for the class is attached as a pdf PJ FL2013 info sheet.
Documentation about metadata is important. The International Association of Sound and Audiovisual Archives have a good set of suggested interpretations for Dublin Core elements (for audiovisual material) here.