I would be interested in seeing a 5.1 to 7.1 upmix option, where the surround channels are played through both the surround and back speakers. In a 7.1 configuration, the surround speakers are not placed far enough back. You're left at the very edge of the sound bubble which isn't great. Likewise, by remapping surround l/r to surround back l/r, the angles are off again and it's noby shamov575 - VanityPRO