VLC media playerhttp://www.videolan.org/vlc/
VLC is a popular libre and open source media player and multimedia engine, used by a large number of individuals, professionals, companies and institutions. Using open source technologies and libraries, VLC has been ported to most computing platforms, including GNU/Linux, Windows, Mac OS X, BSD, iOS and Android.
VLC can play most multimedia files, discs, streams, allows playback from devices, and is able to convert to or stream in various formats. The VideoLAN project was started at the university École Centrale Paris who relicensed VLC under the GPLv2 license in February 2001. Since then, VLC has been downloaded close to one billion times.