I have a 5.1 receiver connected to my R9 200 via HDMI at 24bit 192000Hz. Playing 5.1 content works fine but what I would like to do is enable stereo content across all 5 speakers without having to re-configure the playback device every time. This used to be available as an option called Stereo Upmix in the Enhancements section of the Device Properties, but that option is no longer there. Is this no longer a feature of the AMD audio Drivers? I am currently using AMD 10.0.1.5 audio driver - is there a newer version of this driver that has the Stereo Upmix option?