I got it
Strangely it was the router firmware(DIR 655)
Downgraded it from 1.05 to 1.02 and now i can see them all: Firefly WMP11 and I Tunes.
No idea what it was.I tried everything and i really mean it.
As soon as i did the firmware … i can now enjoy my Firefly server. 😀
I didn’t even have to enable the wireless multicast.
I am waiting forward to see what Dlink has to say about it.It’s been a couple of days now since i wrote them.Maybe they won’t bother to reply.It happened to me before. 😀
Thank you again Ron for your pertinent suggestions!!