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

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

asy   bsy   csy   dsy   esy   fsy   gsy   hsy   isy   jsy   ksy   lsy   msy   nsy   osy   psy   qsy   rsy   ssy   tsy   usy   vsy   wsy   xsy   ysy   zsy   0sy   1sy   2sy   3sy   4sy   5sy   6sy   7sy   8sy   9sy