http://forum.doom9.org/showthread.php?t=165890Media Player Classic - BE (MPC-BE) is based on the original "Media Player Classic" project (Gabest) and "Media Player Classic Home Cinema" project (Casimir666), contains additional features and bug fixes.
Mirror
http://www.videohelp.com/tools/MPC-BE
I don't think my desktop have a SSE capable CPU but it still seems to work well.
4 out of 4 guys at videohelp.com think you should check this media player out.