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

a4.ASX	Advanced Stream Redirector
a4.DTS	Digital Theater Systems Audio File
a4.GXF	General eXchange Format
a4.M2V	MPEG-2 Video
a4.M3U	MP3 Uniform Resource Locator
a4.M4V	MPEG-4 Video File
a4.MPEG1	MPEG-1 Video
a4.MPEG2	MPEG-2 Video
a4.MTS	AVCHD Video File
a4.MXF	Material eXchange Format
a4.OGM	Ogg Multimedia Container File
a4.PLS	Playlist
a4.BUP	DVD Information File
a4.A52	Dolby Digital AC-3 Compressed Audio File
a4.AAC	Advanced Audio Coding Compressed Audio File
a4.B4S	Winamp 3+ Playlist
a4.CUE	Cue Sheet
a4.DIVX	DivX Movie
a4.DV	Digital Video
a4.FLV	Flash Video
a4.M1V	MPEG-1 Video
a4.M2TS	MPEG-2 Transport Stream Videos
a4.MKV	Matroska Video Stream
a4.MOV	Apple QuickTime Movie
a4.MPEG4	MPEG-4 Video
a4.OMA	OpenMG Audio File
a4.SPX	Ogg Speex Audio File
a4.TS	DVD Video
a4.VLC	VLC Media Player Data
a4.VOB	DVD Video Object
a4.XSPF	XML Shareable Playlist Format
a4.DAT	VCD Video
a4.BIN	Binary DVD Video
a4.IFO	DVD Information File
a4.PART	Partially Downloaded File
a4.3G2	3G Mobile Phone Video
a4.AVI	Audio Video Interleave
a4.MPEG	MPEG Video
a4.MPG	MPEG Video
a4.FLAC	Free Lossless Audio Codec Compressed Audio FIle
a4.M4A	MPEG-4 Audio File
a4.MP1	MPEG-1 Audio Layer I
a4.OGG	Ogg Multimedia Container File
a4.WAV	Waveform Audio
a4.XM	Extended Module Audio File
a4.3GP	3G Mobile Phone Video
a4.SRT	DVD Subtitles File
a4.WMV	Windows Media Video
a4.AC3	Dolby Digital AC-3 Compressed Audio File
a4.ASF	Advanced Systems Format Video
a4.MOD	MOD Audio File
a4.MP2	MPEG-1 Audio Layer II
a4.MP3	MPEG-1 Audio Layer 3
a4.MP4	MPEG-4 Part 14 Multimedia Container
a4.WMA	Windows Media Audio File
a4.MKA	Matroska Audio Stream
a4.M4P	Protected AAC File

aa4   ba4   ca4   da4   ea4   fa4   ga4   ha4   ia4   ja4   ka4   la4   ma4   na4   oa4   pa4   qa4   ra4   sa4   ta4   ua4   va4   wa4   xa4   ya4   za4   0a4   1a4   2a4   3a4   4a4   5a4   6a4   7a4   8a4   9a4