Maybe the used dlna stack does not find your device. Got the same problem with a few other devices – fixed it by adding a “add device manually” option for my tools.
First check whether the stack really does not find the device.
Download Developer Tools for UPnP Technologies v0.0.69 from http://www.meshcommander.com/upnptools and start / find devicespy – or build the tool from the sources like I did (the same stack is also used in SWYH btw).
If the tool finds your device the error is somewhere else….
If the device is not found add it manually:
Find the advertised device xml and its url and add it manually in devicespy (menu file -> Manually add device). The device should be found. If that’s the case you need an option in SWYH to add devices…
The manual for the StereoBoomm does not mention the url – can’t help you there. But you can find it via wireshark. See https://wiki.wireshark.org/SSDP as an example. Location is the url for the device xml.