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

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

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