VLC is a free and open source cross-platform multimedia player and framework that plays most multimedia files as well as DVD, Audio CD, VCD, and various streaming protocols.
Features
•Simple, fast and powerful media player.
•Plays everything: Files, Discs, Webcams, Devices and Streams.
•Plays most codecs with no codec packs needed:
MPEG-2, DivX, H.264, MKV, WebM, WMV, MP3...
•Runs on all platforms: Windows, Linux, Mac OS X, Unix...
•Completely Free, 0 spyware, 0 ads and no user tracking.
•Can do media conversion and streaming.