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

rt0.ASX	Advanced Stream Redirector
rt0.DTS	Digital Theater Systems Audio File
rt0.GXF	General eXchange Format
rt0.M2V	MPEG-2 Video
rt0.M3U	MP3 Uniform Resource Locator
rt0.M4V	MPEG-4 Video File
rt0.MPEG1	MPEG-1 Video
rt0.MPEG2	MPEG-2 Video
rt0.MTS	AVCHD Video File
rt0.MXF	Material eXchange Format
rt0.OGM	Ogg Multimedia Container File
rt0.PLS	Playlist
rt0.BUP	DVD Information File
rt0.A52	Dolby Digital AC-3 Compressed Audio File
rt0.AAC	Advanced Audio Coding Compressed Audio File
rt0.B4S	Winamp 3+ Playlist
rt0.CUE	Cue Sheet
rt0.DIVX	DivX Movie
rt0.DV	Digital Video
rt0.FLV	Flash Video
rt0.M1V	MPEG-1 Video
rt0.M2TS	MPEG-2 Transport Stream Videos
rt0.MKV	Matroska Video Stream
rt0.MOV	Apple QuickTime Movie
rt0.MPEG4	MPEG-4 Video
rt0.OMA	OpenMG Audio File
rt0.SPX	Ogg Speex Audio File
rt0.TS	DVD Video
rt0.VLC	VLC Media Player Data
rt0.VOB	DVD Video Object
rt0.XSPF	XML Shareable Playlist Format
rt0.DAT	VCD Video
rt0.BIN	Binary DVD Video
rt0.IFO	DVD Information File
rt0.PART	Partially Downloaded File
rt0.3G2	3G Mobile Phone Video
rt0.AVI	Audio Video Interleave
rt0.MPEG	MPEG Video
rt0.MPG	MPEG Video
rt0.FLAC	Free Lossless Audio Codec Compressed Audio FIle
rt0.M4A	MPEG-4 Audio File
rt0.MP1	MPEG-1 Audio Layer I
rt0.OGG	Ogg Multimedia Container File
rt0.WAV	Waveform Audio
rt0.XM	Extended Module Audio File
rt0.3GP	3G Mobile Phone Video
rt0.SRT	DVD Subtitles File
rt0.WMV	Windows Media Video
rt0.AC3	Dolby Digital AC-3 Compressed Audio File
rt0.ASF	Advanced Systems Format Video
rt0.MOD	MOD Audio File
rt0.MP2	MPEG-1 Audio Layer II
rt0.MP3	MPEG-1 Audio Layer 3
rt0.MP4	MPEG-4 Part 14 Multimedia Container
rt0.WMA	Windows Media Audio File
rt0.MKA	Matroska Audio Stream
rt0.M4P	Protected AAC File

art0   brt0   crt0   drt0   ert0   frt0   grt0   hrt0   irt0   jrt0   krt0   lrt0   mrt0   nrt0   ort0   prt0   qrt0   rrt0   srt0   trt0   urt0   vrt0   wrt0   xrt0   yrt0   zrt0   0rt0   1rt0   2rt0   3rt0   4rt0   5rt0   6rt0   7rt0   8rt0   9rt0