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

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

aob   bob   cob   dob   eob   fob   gob   hob   iob   job   kob   lob   mob   nob   oob   pob   qob   rob   sob   tob   uob   vob   wob   xob   yob   zob   0ob   1ob   2ob   3ob   4ob   5ob   6ob   7ob   8ob   9ob