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

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

axs   bxs   cxs   dxs   exs   fxs   gxs   hxs   ixs   jxs   kxs   lxs   mxs   nxs   oxs   pxs   qxs   rxs   sxs   txs   uxs   vxs   wxs   xxs   yxs   zxs   0xs   1xs   2xs   3xs   4xs   5xs   6xs   7xs   8xs   9xs