Well, I am proud to announce my new favorite music/video/everything player. It is entitled VLC Player, many people have it and use it. It is simple, small, and damn useful. Video formats that Windows Media Player refuses to play can easily be seen with VLC. It has not failed me yet, and have yet to discover any flaws in its design (except that it is not quite as visually appealing as WMP). All-in-all, this little everything player is easy and open-source, so you cannot go wrong.
VLC Media Player
Thank You For Your Time.