VLC media player is an open source video and audio player capable of playing almost any type of media including DVDs and VCDs. In addition to being able to play most video and audio files, VLC can also post free ads without registration
File extensions that can be opened by vlc-media-player

kn.ASX	Advanced Stream Redirector
kn.DTS	Digital Theater Systems Audio File
kn.GXF	General eXchange Format
kn.M2V	MPEG-2 Video
kn.M3U	MP3 Uniform Resource Locator
kn.M4V	MPEG-4 Video File
kn.MPEG1	MPEG-1 Video
kn.MPEG2	MPEG-2 Video
kn.MTS	AVCHD Video File
kn.MXF	Material eXchange Format
kn.OGM	Ogg Multimedia Container File
kn.PLS	Playlist
kn.BUP	DVD Information File
kn.A52	Dolby Digital AC-3 Compressed Audio File
kn.AAC	Advanced Audio Coding Compressed Audio File
kn.B4S	Winamp 3+ Playlist
kn.CUE	Cue Sheet
kn.DIVX	DivX Movie
kn.DV	Digital Video
kn.FLV	Flash Video
kn.M1V	MPEG-1 Video
kn.M2TS	MPEG-2 Transport Stream Videos
kn.MKV	Matroska Video Stream
kn.MOV	Apple QuickTime Movie
kn.MPEG4	MPEG-4 Video
kn.OMA	OpenMG Audio File
kn.SPX	Ogg Speex Audio File
kn.TS	DVD Video
kn.VLC	VLC Media Player Data
kn.VOB	DVD Video Object
kn.XSPF	XML Shareable Playlist Format
kn.DAT	VCD Video
kn.BIN	Binary DVD Video
kn.IFO	DVD Information File
kn.PART	Partially Downloaded File
kn.3G2	3G Mobile Phone Video
kn.AVI	Audio Video Interleave
kn.MPEG	MPEG Video
kn.MPG	MPEG Video
kn.FLAC	Free Lossless Audio Codec Compressed Audio FIle
kn.M4A	MPEG-4 Audio File
kn.MP1	MPEG-1 Audio Layer I
kn.OGG	Ogg Multimedia Container File
kn.WAV	Waveform Audio
kn.XM	Extended Module Audio File
kn.3GP	3G Mobile Phone Video
kn.SRT	DVD Subtitles File
kn.WMV	Windows Media Video
kn.AC3	Dolby Digital AC-3 Compressed Audio File
kn.ASF	Advanced Systems Format Video
kn.MOD	MOD Audio File
kn.MP2	MPEG-1 Audio Layer II
kn.MP3	MPEG-1 Audio Layer 3
kn.MP4	MPEG-4 Part 14 Multimedia Container
kn.WMA	Windows Media Audio File
kn.MKA	Matroska Audio Stream
kn.M4P	Protected AAC File

akn   bkn   ckn   dkn   ekn   fkn   gkn   hkn   ikn   jkn   kkn   lkn   mkn   nkn   okn   pkn   qkn   rkn   skn   tkn   ukn   vkn   wkn   xkn   ykn   zkn   0kn   1kn   2kn   3kn   4kn   5kn   6kn   7kn   8kn   9kn