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

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

afn   bfn   cfn   dfn   efn   ffn   gfn   hfn   ifn   jfn   kfn   lfn   mfn   nfn   ofn   pfn   qfn   rfn   sfn   tfn   ufn   vfn   wfn   xfn   yfn   zfn   0fn   1fn   2fn   3fn   4fn   5fn   6fn   7fn   8fn   9fn