I've been in contact with Galaxy Studios am waiting for a beta Auro3D VST plugin to try in JRiver. I don't think it will be able to decode, but it can upmix 5.1 or 7.1 to higher channel counts using Auro3D's upmixing algorithms. The plugin is designed for creation of Auro3D content, but I want to try it for on-the-fly upmixing.