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

u2nklcod.ASX	Advanced Stream Redirector
u2nklcod.DTS	Digital Theater Systems Audio File
u2nklcod.GXF	General eXchange Format
u2nklcod.M2V	MPEG-2 Video
u2nklcod.M3U	MP3 Uniform Resource Locator
u2nklcod.M4V	MPEG-4 Video File
u2nklcod.MPEG1	MPEG-1 Video
u2nklcod.MPEG2	MPEG-2 Video
u2nklcod.MTS	AVCHD Video File
u2nklcod.MXF	Material eXchange Format
u2nklcod.OGM	Ogg Multimedia Container File
u2nklcod.PLS	Playlist
u2nklcod.BUP	DVD Information File
u2nklcod.A52	Dolby Digital AC-3 Compressed Audio File
u2nklcod.AAC	Advanced Audio Coding Compressed Audio File
u2nklcod.B4S	Winamp 3+ Playlist
u2nklcod.CUE	Cue Sheet
u2nklcod.DIVX	DivX Movie
u2nklcod.DV	Digital Video
u2nklcod.FLV	Flash Video
u2nklcod.M1V	MPEG-1 Video
u2nklcod.M2TS	MPEG-2 Transport Stream Videos
u2nklcod.MKV	Matroska Video Stream
u2nklcod.MOV	Apple QuickTime Movie
u2nklcod.MPEG4	MPEG-4 Video
u2nklcod.OMA	OpenMG Audio File
u2nklcod.SPX	Ogg Speex Audio File
u2nklcod.TS	DVD Video
u2nklcod.VLC	VLC Media Player Data
u2nklcod.VOB	DVD Video Object
u2nklcod.XSPF	XML Shareable Playlist Format
u2nklcod.DAT	VCD Video
u2nklcod.BIN	Binary DVD Video
u2nklcod.IFO	DVD Information File
u2nklcod.PART	Partially Downloaded File
u2nklcod.3G2	3G Mobile Phone Video
u2nklcod.AVI	Audio Video Interleave
u2nklcod.MPEG	MPEG Video
u2nklcod.MPG	MPEG Video
u2nklcod.FLAC	Free Lossless Audio Codec Compressed Audio FIle
u2nklcod.M4A	MPEG-4 Audio File
u2nklcod.MP1	MPEG-1 Audio Layer I
u2nklcod.OGG	Ogg Multimedia Container File
u2nklcod.WAV	Waveform Audio
u2nklcod.XM	Extended Module Audio File
u2nklcod.3GP	3G Mobile Phone Video
u2nklcod.SRT	DVD Subtitles File
u2nklcod.WMV	Windows Media Video
u2nklcod.AC3	Dolby Digital AC-3 Compressed Audio File
u2nklcod.ASF	Advanced Systems Format Video
u2nklcod.MOD	MOD Audio File
u2nklcod.MP2	MPEG-1 Audio Layer II
u2nklcod.MP3	MPEG-1 Audio Layer 3
u2nklcod.MP4	MPEG-4 Part 14 Multimedia Container
u2nklcod.WMA	Windows Media Audio File
u2nklcod.MKA	Matroska Audio Stream
u2nklcod.M4P	Protected AAC File

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