The Java Media Framework API (JMF) enables multimedia to be added to Java applications. OpenOffice needs it to play audio and video, for example, within Impress presentations. In summary, the media types supported are audio: AIFF, AU, AVI, GSM, MIDI, MP2, QT, RMF, WAV video: AVI, MPEG-1, QT, H.261, H.263 other: HotMedia For a full list of the media types supported, see http://java.sun.com/javase/technologies/desktop/media/jmf/2.1.1/formats.html