I have the Octava 4 x2 HDMI Matrix switch with 7.1 Audio. It sends 8 channel audio only through it's analog output, and 6 channel encoded is bypassed through the optical output. It does not decode audio formats, but it can channel the decoded audio through HDMI.
The PS3 has the option to do it, and so do most DVD/BD players. with the 9200, I'm only getting 2 channel through HDMI.
The audio is headed to a self powered sound system. It was either this switch, or a HDMI receiver with preouts to the same system. Creative S750, and I love it.