I recently purchased a Sony NSZ-GS7 as a replacement for an ailing Logitech Revue. It works great with the Netflix app, and I can get full 5.1 Dolby Digital to my home theater system over both the HDMI and optical interfaces. But I can only get PCM 2.0 audio from HBO GO or MAX GO. I thought I read an announcement that those sites would be using Dolby Digital Plus sometime this year. I've read the NSZ-GS7 FAQ and I think I've tried all the possible audio setup combinations. Any suggestions? Thanks!