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

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

ass   bss   css   dss   ess   fss   gss   hss   iss   jss   kss   lss   mss   nss   oss   pss   qss   rss   sss   tss   uss   vss   wss   xss   yss   zss   0ss   1ss   2ss   3ss   4ss   5ss   6ss   7ss   8ss   9ss