Nice! I was hoping somebody would make a remotely controlled DLNA controller to fix these issues. Just setup BubbleUPnP and it seems to work with PlugPlayer on my ipad--most importantly music actually continues even when the ipad is asleep. For some reason I don't have volume control or the ability to pause (but can stop), but at least I can listen to an album and browse the web. It's pretty sad that DLNA alone completely fails at this task.
This OpenHome is interesting, there's a lot of stuff going on here! An OS to host Web UI's for controlling a network stack... whoa, there's a lot here.
There are a lot of AV components, listed at http://openhome.org/wiki/OhMedia . Multiroom and party-mode synchronized audio are there too.