Windows 7: Philips SLA 5520

I have a Philips SLA 5520 wireless streamer it plays music from my PC ok through the home network but I would like to use the play to function in 7 when activating it finds the streamer when contacing media device but then stays at contacting media server.

any ideas it appears in my network as allowed etc and as I say does work in reverse when playing from the device itself. Perhaps is cant deal with this action would be good if it could though.

I have now installed Twonky and this plays no problem to the SLA 5520 it also works much quicker than media player not sure why this is??