The SMPlayer project was created in order to endow a wonderful, versatile, multiplatform Mplayer with a beautiful, modern, user-friendly interface and wide, built-in capabilities. I think that the developers have quite succeeded.
One of the most interesting features of SMPlayer is that it remembers the settings of all the files it played. If you started watching a movie, but have to stop — don't worry. When you open the movie, it will be resumed in the same place and with the same settings for audio tracks, subtitles, volume, proportions, brightness. I have only met this with KMPlay (description in the Demo blog). The player is easily controlled with multiple audio tracks – it works with avi and mkv and, of course, with DVD. Since the project is developing versions for all known operating systems, the player's interface is somewhat averaged, although quite neat: fashionable, Tango-like icons, customizable panels and menus in the spirit of Gnom. However, the control can be concentrated in the hot keys. Codecs come in a separate package that can be downloaded from the project's website. The interface is multilingual (there are Russian and Ukrainian), versions exist for Windows and Linux, the player has free distribution and open source. An excellent, open, free and versatile alternative to many multimedia players.