SMPlayer is a free media player for Windows and Linux with built-in codecs that can play virtually all video and audio formats. It doesn't need any external codecs. Just install SMPlayer and you'll be able to play all formats without the hassle to find and install codec packs.
One of the most interesting features of SMPlayer: it remembers the settings of all files you play. So you start to watch a movie but you have to leave... don't worry, when you open that movie again it will be resumed at the same point you left it, and with the same settings: audio track, subtitles, volume...
Plays most multimedia files as well as DVDs, Audio CDs, VCDs, etc.
Watch movies with subtitles and many other cool functions.
Install a large set of multimedia codecs, filters, and plug-ins for your PC.
Program which allows you to open any video file.
Free and open source media player which plays almost all multimedia formats.