SMPlayer is a complete media player for Windows. It uses the award-winning MPlayer as playback engine which is capable of playing most video and audio formats (avi, mkv, wmv, mp4, mpeg... see list). It uses its own codecs, so you don't need to install any 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 resume at the same point you left it, and with the same settings: audio track, subtitles, volume...