It's free and installs in seconds.

VLC is Free

VLC Player (VideoLAN) is free software. VLC is released under the GNU General Public License.

It Plays Anything

VLC plays absolutely anything. It supports an enormous number of multimedia formats, without the need for additional codecs.

VLC features a complete streaming server, with extended features like video on demand, on-the-fly transcoding, and much more.

VLC Media Player is a free and open source cross-platform media player that plays almost any imaginable format.

VLC Media Player - Screenshot