Compact Multi Format Media Player
VLC Media Player is a free open-source media player. The list of compatible formats and codecs it supports is a long one but it includes MPEG (1, 2, DVD, VCD, SVCD etc.) Audio CD, AVI, ASF, WMV, WMA, MP3, MP4, MOV, 3GP, OGG, WAV, FLAC, FLV, DivX, XviD, Cinepac, MJPEG, Indeo, Real Audio (partial), and more.
Download VideoLAN Media Player here
