iTunes is... meh <_< It now has an "optional" download of Safari. Maybe that's why I don't like it, since iProducts bring in too many iFriends along if you don't pay attention :P
Zoom Player is included with CCCP.
Windows Media Player is... flawed. For one it refuses to load VSFilter and Haali's Media Splitter on mine properly, and the whole DRM license is just a party of malware.