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

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

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