After I have sorted out the network problems that initially troubled my new Aries Mini, there still remain problems when using it as a UPnP renderer with JRiver.
Controlled via JRemote on an iPad and streaming the music from a NAS to the Mini via WiFi, it is impossible to play a whole album. The playback randomly stops. My assumption is that the communication between the Mini and JRiver is "broken", perhaps because the UPnP protocol in the Mini has glitches.
Using my OPPO BDP-105EU as a DLNA renderer, JRiver playback is flawless. Well, apart from the lack of gapless play with the OPPO, but it just doesn't do gapless. I know that. Using Auralic's own app, the Lightning DS, the Mini's playback is flawless. So, the problem seems to be with the Mini's implementation of UPnP and its communication with JRiver. This could probably be fixed with a firmware update.
Does anyone have similar experiences?