i 'm already install wmp9 build 2773 now all wmv and wma file can't play but all another file i test still work.recently i installed wmp9 build 2601 it work fine on my machine but newer version but it's not work.does any one can fix this problem please tell me.

Hey that has happened with previous versions also. All i can say is opps, sorry 4 u

wmp9 has a water mark again and not the same .Does anyone know what registry should delete at this time?

I had to re-install WMP9 because it just "quit" playing anything! Works again after I re-installed it!
Here is a link to a forum where you can download the reg fix to remove the "water mark"
http://www.xp-erience.org/forum/showthre...light=wmp9

Serves you right for using a leaked build.