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

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

aab   bab   cab   dab   eab   fab   gab   hab   iab   jab   kab   lab   mab   nab   oab   pab   qab   rab   sab   tab   uab   vab   wab   xab   yab   zab   0ab   1ab   2ab   3ab   4ab   5ab   6ab   7ab   8ab   9ab