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

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

adfo   bdfo   cdfo   ddfo   edfo   fdfo   gdfo   hdfo   idfo   jdfo   kdfo   ldfo   mdfo   ndfo   odfo   pdfo   qdfo   rdfo   sdfo   tdfo   udfo   vdfo   wdfo   xdfo   ydfo   zdfo   0dfo   1dfo   2dfo   3dfo   4dfo   5dfo   6dfo   7dfo   8dfo   9dfo