Yamaha's newest recievers can decode a 6.1 DVD soundtrack using their 6.1 matrix mode but in their careful marketing words they never state that it uses the Digital Dolby EX standard to accomplish this. I see that it is not advertised as DD-EX compliant either (just 6.1 capable). I'm wondering if they are just using there own propriatary decoding to accomplish 6.1. Input anyone ???