DO NOT NOT NOT NOT GET K-LITE >_<
K-Lite loads all kinds of conflicting filters and has a high chance of crashing your machine. Read about it
here. Addition information
here. Same applies to Ace Mega.
And uxevangelist, I kind of misunderstood, sorry :P
The WMP interface is pretty fancy and I like it... but Zoom Player's GUI is <3 forever!