DVD Architecht 7.0 preview does not work on surround channels even when set to 5.1 surround. The video file is surround.
File: Dolby Digital ac3 5.1 (Edius 9 PRO)
Devices: Windows 10 / Creative SoundBlaster X-Fi Surround 5.1 and Logitecht Z-5500 5.1 speakers.