VLC Media Player - VLC is a free and open source cross-platform multimedia player and framework.
foobar2000 - An advanced freeware audio player for the Windows platform.
DVD Player+ - DVD Player+ is a FREE High-quality and powerful DVD Movie & Media Player, specially designed for playback of your CD's, DVD's, Blu-Ray or VCD's. It also provides the user with extra info for the current Movie from imdb (plot, poster, trailers, etc).
Clementine - Clementine is a cross-platform free and open source music player and library organizer based on...
QuickTime Player - Watch Internet video, HD movie trailers, and personal media clips.
CyberLink PowerDVD - PowerDVD Series - The Ultimate Entertainment Solution.