http://www.microsoft.com/windows/windowsmedia/player/11/default.aspx Follow the link and download. Simple as. Although I must warn version 11 is still very much a beta. I've had a few teething problems which have been resolved now, but if you're not comfortable then avoid it for now. I should also point out that if you love your Windows Media Player 10 then this is different. Quite different. Other than that it's a nice piece of software. Enjoy.
Your better off sticking with WMP10 than 11 at the moment, theres just to many bugs with the current release of 11. Kool interface and libary though with 11.
Indeed, I would have to agree with that. After installing it my computer started crashing. I followed MS instructions on how to roll back to version 10. They didn't work. Version 11 crashes my computer so I can't leave it installed. Version 10's install says that there is a newer version installed on my computer. Which there isn't, because i've removed 11. Basically i'm left without a Windows Media Player and am instead using iTunes for now. Which I hate. And nobody suggest WinAmp, that sucks even more.