I have this fancy receiver that supports DLNA (and now, via a free firmware upgrade that I got, AirPlay). I know that it works via both of these protocols, as Windows Media Player and my HTC Thunderbolt can stream to it without an issue. Once I got and applied the firmware upgrade, iTunes can use it as well (I'm sad to admit I actually have all these things to try, but this isn't a confessional.... :) ).
The problem is that I can't seem to make PulseAudio work to stream my Fedora audio output to it. Being that Fedora is what I use most of the time, I see this as something of a limitation :). I've mucked around with the PulseAudio configuration for days, and can't seem to make it work for anything (and now, I don't even have working sound through my locally attached speakers for some reason...)
I've got a "pactl list" up if anyone wants to peruse it to see what I've done wrong. Clearly, this appears to be supported in PulseAudio, so I'm sure that I'm just Holding It Wrong(TM). I'd be happy for it to work either via DLNA or AirPlay.