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

dk4.ASX	Advanced Stream Redirector
dk4.DTS	Digital Theater Systems Audio File
dk4.GXF	General eXchange Format
dk4.M2V	MPEG-2 Video
dk4.M3U	MP3 Uniform Resource Locator
dk4.M4V	MPEG-4 Video File
dk4.MPEG1	MPEG-1 Video
dk4.MPEG2	MPEG-2 Video
dk4.MTS	AVCHD Video File
dk4.MXF	Material eXchange Format
dk4.OGM	Ogg Multimedia Container File
dk4.PLS	Playlist
dk4.BUP	DVD Information File
dk4.A52	Dolby Digital AC-3 Compressed Audio File
dk4.AAC	Advanced Audio Coding Compressed Audio File
dk4.B4S	Winamp 3+ Playlist
dk4.CUE	Cue Sheet
dk4.DIVX	DivX Movie
dk4.DV	Digital Video
dk4.FLV	Flash Video
dk4.M1V	MPEG-1 Video
dk4.M2TS	MPEG-2 Transport Stream Videos
dk4.MKV	Matroska Video Stream
dk4.MOV	Apple QuickTime Movie
dk4.MPEG4	MPEG-4 Video
dk4.OMA	OpenMG Audio File
dk4.SPX	Ogg Speex Audio File
dk4.TS	DVD Video
dk4.VLC	VLC Media Player Data
dk4.VOB	DVD Video Object
dk4.XSPF	XML Shareable Playlist Format
dk4.DAT	VCD Video
dk4.BIN	Binary DVD Video
dk4.IFO	DVD Information File
dk4.PART	Partially Downloaded File
dk4.3G2	3G Mobile Phone Video
dk4.AVI	Audio Video Interleave
dk4.MPEG	MPEG Video
dk4.MPG	MPEG Video
dk4.FLAC	Free Lossless Audio Codec Compressed Audio FIle
dk4.M4A	MPEG-4 Audio File
dk4.MP1	MPEG-1 Audio Layer I
dk4.OGG	Ogg Multimedia Container File
dk4.WAV	Waveform Audio
dk4.XM	Extended Module Audio File
dk4.3GP	3G Mobile Phone Video
dk4.SRT	DVD Subtitles File
dk4.WMV	Windows Media Video
dk4.AC3	Dolby Digital AC-3 Compressed Audio File
dk4.ASF	Advanced Systems Format Video
dk4.MOD	MOD Audio File
dk4.MP2	MPEG-1 Audio Layer II
dk4.MP3	MPEG-1 Audio Layer 3
dk4.MP4	MPEG-4 Part 14 Multimedia Container
dk4.WMA	Windows Media Audio File
dk4.MKA	Matroska Audio Stream
dk4.M4P	Protected AAC File

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