SMPlayer is a free and open source media player for Microsoft Windows and Linux. It supports a wide range of video and audio formats, including AVI, MP4, MKV, DivX, Xvid, DVD, VCD, MP3, OGG, WMA and many more. SMPlayer is designed to be lightweight and easy to use, while still providing a wide range of features, such as a powerful built-in subtitle editor, audio and video filters, a bookmark system, custom skins, an advanced audio/video equalizer, and even a plugin system. Additionally, SMPlayer can be used to play YouTube videos, and it includes a built-in YouTube browser.
Better video looping, more modern interface.