wmp10 can't find media target

When I go to sites with video or audio targets, wmp10
gives a message error that says it can't find them. I can
save the target to desktop, and play from there, but not
on the website. How can I fix this? I tried
wmp10/tools/options/network,

then Multicast, UDP, TCP, and HTTP boxes are selected,
and

Streaming proxy settings for HTTP, MMS and RTSP are all
set to Autodetect.

Still won't find target to play in browser.

Thanks for any help.

Bobby