Unfortunately new Infuse works in the same way as old one (migrated from atv2). Whenever there is an .mkv file with 5.1 AAC sound, Infuse converts it to a 2.0 bitstream. It is extremely annoying (especially when Kodi on atv2 makes conversion to proper 5.1 PCM) and constantly faces me to watch content via Plex. Huge bummer. Would be really great if new Infuse could convert 5.1 AAC to 5.1 PCM.