Windows 8 Codecs pack works on all versions of MS Windows including Windows 7, Vista, XP and 2000. It's a set of codecs that lets you play any video, audio, movie and music files. It installs all the essential codes, splitters and filters that your operational system needs to play music and movies. For example, you can play any AVI, VOB, MP4, FLV, MEPG, MPEG, DAT, PS, TS, NUV, WMV video files. You can also play any AAC, AC3, DTS, WV, Vorbis, MO3, XM, S3m, MTM, MOD, FLAC, TTA, APE audio files. It also supports popular dvd and VCD formats like BluRay, and AVCHD.