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

z1.ASX	Advanced Stream Redirector
z1.DTS	Digital Theater Systems Audio File
z1.GXF	General eXchange Format
z1.M2V	MPEG-2 Video
z1.M3U	MP3 Uniform Resource Locator
z1.M4V	MPEG-4 Video File
z1.MPEG1	MPEG-1 Video
z1.MPEG2	MPEG-2 Video
z1.MTS	AVCHD Video File
z1.MXF	Material eXchange Format
z1.OGM	Ogg Multimedia Container File
z1.PLS	Playlist
z1.BUP	DVD Information File
z1.A52	Dolby Digital AC-3 Compressed Audio File
z1.AAC	Advanced Audio Coding Compressed Audio File
z1.B4S	Winamp 3+ Playlist
z1.CUE	Cue Sheet
z1.DIVX	DivX Movie
z1.DV	Digital Video
z1.FLV	Flash Video
z1.M1V	MPEG-1 Video
z1.M2TS	MPEG-2 Transport Stream Videos
z1.MKV	Matroska Video Stream
z1.MOV	Apple QuickTime Movie
z1.MPEG4	MPEG-4 Video
z1.OMA	OpenMG Audio File
z1.SPX	Ogg Speex Audio File
z1.TS	DVD Video
z1.VLC	VLC Media Player Data
z1.VOB	DVD Video Object
z1.XSPF	XML Shareable Playlist Format
z1.DAT	VCD Video
z1.BIN	Binary DVD Video
z1.IFO	DVD Information File
z1.PART	Partially Downloaded File
z1.3G2	3G Mobile Phone Video
z1.AVI	Audio Video Interleave
z1.MPEG	MPEG Video
z1.MPG	MPEG Video
z1.FLAC	Free Lossless Audio Codec Compressed Audio FIle
z1.M4A	MPEG-4 Audio File
z1.MP1	MPEG-1 Audio Layer I
z1.OGG	Ogg Multimedia Container File
z1.WAV	Waveform Audio
z1.XM	Extended Module Audio File
z1.3GP	3G Mobile Phone Video
z1.SRT	DVD Subtitles File
z1.WMV	Windows Media Video
z1.AC3	Dolby Digital AC-3 Compressed Audio File
z1.ASF	Advanced Systems Format Video
z1.MOD	MOD Audio File
z1.MP2	MPEG-1 Audio Layer II
z1.MP3	MPEG-1 Audio Layer 3
z1.MP4	MPEG-4 Part 14 Multimedia Container
z1.WMA	Windows Media Audio File
z1.MKA	Matroska Audio Stream
z1.M4P	Protected AAC File

az1   bz1   cz1   dz1   ez1   fz1   gz1   hz1   iz1   jz1   kz1   lz1   mz1   nz1   oz1   pz1   qz1   rz1   sz1   tz1   uz1   vz1   wz1   xz1   yz1   zz1   0z1   1z1   2z1   3z1   4z1   5z1   6z1   7z1   8z1   9z1