My mobo aint got DDL, but I can output DD or DTS to my AV amp and I get propper DD or DTS 5.1. The screen on the amp says 'DTS Direct'. My point was, it's nothing to do with DPL.
Or are just solely refering to non-DVD sources? I think I misread this bit;
'....5.1 over digital will only be possible with DVDs or via using a reciever that supports DBPL 1 or 2.'
I'm gonna go now....