Hello guys!
I was playing with the settings of mplayer, and in the section "codec and demuxer" i chose some video and audio codecs (the default option was "none"), after that i could not use smplayer. When i select the "none" option and click "ok" i restart mplayer but the settings are not what i chose ("none") but the last video and audio codec i selected. I uninstalled mplayer and then installed it again, but the settings are the same. How can i restore my settings to default?