[Esug-list] How to play ESUG 2016 videos on Windows

All, I know that 90%+ of all ESUG attendees are using Macs, but I don't. I saw that the videos are .key files. Technically they are zip files with a directory structure in it. Does anybody know how to play these videos on Windows? Georg Georg Heeg eK, Dortmund und Köthen, HR Dortmund A 12812 Wallstraße 22, 06366 Köthen Tel. +49-3496-214328, Fax +49-3496-214712