Codec pack ultimate supports: DivX, XviD, MPEG, FLV, SWF, WMV, C3FILTER, FFDSHOW, DScaler, Haali Media Splitter, Ogg, FLAC, AC3, APE, MPC, Gabest, Quicktime and RealMedia.This software is ready for the new Microsoft OS, Windows Vista, without problems.A perfect application to manage to view and listen all types of multimedia files on you own PC, without complications.