How to block Windows Media Player from downloading Album Art?

I have disabled all options for not to retrive media files in WMP 11. I've iTunes and I keep downloading arts from google and paste them on iTunes. And they appear in WMP11 too. And mostly these arts are bigger than the usual WMP arts. But yet WMP downloads art and changes it to the small one!!! And my iTunes arts get vanished!!! All I get is that annoying small art.....!!! So, how do i block wmp??? Ne way ???How to block Windows Media Player from downloading Album Art?Disable the file associations under WMP options.