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

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

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