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