Wikipedia:Media help (Ogg)

To use the integrated video player:

If you use Internet Explorer 9 (or later), you can also install WebM for IE.

Many recent free Unix systems are able to play Vorbis audio without any installation. If you don't have any audio software installed, use your preferred packaging system to browse the players list and pick one. For example, you may install Totem, Amarok, MPlayer, xine, VLC media player, XMMS and others.

You can try your player using the and .

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Wikipedia