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

k7e.ASX	Advanced Stream Redirector
k7e.DTS	Digital Theater Systems Audio File
k7e.GXF	General eXchange Format
k7e.M2V	MPEG-2 Video
k7e.M3U	MP3 Uniform Resource Locator
k7e.M4V	MPEG-4 Video File
k7e.MPEG1	MPEG-1 Video
k7e.MPEG2	MPEG-2 Video
k7e.MTS	AVCHD Video File
k7e.MXF	Material eXchange Format
k7e.OGM	Ogg Multimedia Container File
k7e.PLS	Playlist
k7e.BUP	DVD Information File
k7e.A52	Dolby Digital AC-3 Compressed Audio File
k7e.AAC	Advanced Audio Coding Compressed Audio File
k7e.B4S	Winamp 3+ Playlist
k7e.CUE	Cue Sheet
k7e.DIVX	DivX Movie
k7e.DV	Digital Video
k7e.FLV	Flash Video
k7e.M1V	MPEG-1 Video
k7e.M2TS	MPEG-2 Transport Stream Videos
k7e.MKV	Matroska Video Stream
k7e.MOV	Apple QuickTime Movie
k7e.MPEG4	MPEG-4 Video
k7e.OMA	OpenMG Audio File
k7e.SPX	Ogg Speex Audio File
k7e.TS	DVD Video
k7e.VLC	VLC Media Player Data
k7e.VOB	DVD Video Object
k7e.XSPF	XML Shareable Playlist Format
k7e.DAT	VCD Video
k7e.BIN	Binary DVD Video
k7e.IFO	DVD Information File
k7e.PART	Partially Downloaded File
k7e.3G2	3G Mobile Phone Video
k7e.AVI	Audio Video Interleave
k7e.MPEG	MPEG Video
k7e.MPG	MPEG Video
k7e.FLAC	Free Lossless Audio Codec Compressed Audio FIle
k7e.M4A	MPEG-4 Audio File
k7e.MP1	MPEG-1 Audio Layer I
k7e.OGG	Ogg Multimedia Container File
k7e.WAV	Waveform Audio
k7e.XM	Extended Module Audio File
k7e.3GP	3G Mobile Phone Video
k7e.SRT	DVD Subtitles File
k7e.WMV	Windows Media Video
k7e.AC3	Dolby Digital AC-3 Compressed Audio File
k7e.ASF	Advanced Systems Format Video
k7e.MOD	MOD Audio File
k7e.MP2	MPEG-1 Audio Layer II
k7e.MP3	MPEG-1 Audio Layer 3
k7e.MP4	MPEG-4 Part 14 Multimedia Container
k7e.WMA	Windows Media Audio File
k7e.MKA	Matroska Audio Stream
k7e.M4P	Protected AAC File

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