Nokia has pushed out an update for their DLNA app, Nokia Play To.
Unfortunately as has been usual with the app Nokia did not release a change log, so we can not say what has been changed, but it is likely changes that improve performance and increase compatibility.
From looking at reviews of the app, it seems to be the case that the app either works very well, or does not work at all.
With the latest update it may be worth giving it another try if it failed before.
Find the Nokia exclusive app in Marketplace here.