Watch movie with .mkv or .avi … ect
You will need KMplayer AND Media player classic
And K-Lite Codec Pack
Install all of 3 softwares , set Kmplayer as your default , but Media player classic will help you if Kmplayer can not open some files (a little)
Download all
http://kmplayer.en.softonic.com/download
http://www.free-codecs.com/k_lite_codec_pack_download.htm (download full version)
http://www.free-codecs.com/media_player_classic_download.htm