It might fix your problems.
I am having a problem with WMP 9. I have XP with service pack 2. I can receive the audio through WMP 9 but the picture is in funky colors. I can see people moving but it is not clear. I turned off the installed windows firewall and use Mcafee's firewall and virus protection. Doing some research, it appears I need to disable the firewall. I have disabled both firewalls just to see if it would work and it hasn't. Any solutions?