From Gretech:
GOM Player is a free multimedia player with popular video and audio
codecs built-in. GOM Player supports file formats such as AVI, DAT,
MPEG, DivX, XviD, WMV, ASF. Users don't have to install codecs
separately. GOM Player is capable of playing incomplete or damaged AVI
files by skipping the damaged frames. It can also play locked or
partially downloaded files. Its other features include drag-and-drop
support, HTTP streaming, editable skins, subtitling,...