We have no plans to directly support DLNA at the moment. However, there are some 3rd party apps that support DLNA and work with XiiaLive.
We recommend BubbleUPnP UPnP/DLNA.
That's what I'm trying to do .... It seems to work fine (read instructions for BubblePnP) however I can't get it to work with Chromecast.
Customer support service by UserEcho