VLC media player
VLC is a media player by the VideoLAN team designed to emphasize portability and compatibility. Historically, it was groundbreaking for Linux media software by being the first player to ship with libdvdcss, letting it play encrypted DVDs. This is now a feature that almost all players include, and is no longer an advantage.
To install, simply run
# pacman -S vlc
It seems VLC does not offer an option to change language in its Preferences menu. But you can use the LANGUAGE= prefix. For instance:
$ LANGUAGE=fr vlc %U
will switch VLC interface to french.
Run VLC with the parameter "--extraintf=http" to use both the desktop and web interface.
# vlc --extraintf=http
Or you can enable this feature in the UI by navigating to "View" > "Add Interface" > "Web Interface".
VLC defaults to port 8080: http://127.0.0.1:8080
Edit /usr/share/vlc/http/.hosts to allow remote connections. You will need to restart VLC in order for changes to take effect.