This is interesting... I have a Denon PMA-700AE (stereo amp) and will need to connect up a PS3 to it very soon (awaiting CoDWaW before purchasing).
All the inputs are in use: Phono (goes to the TV), CD, Tuner and DVD/Aux. If I connect the PS3 to the TV with HDMI and set the amp to Phono I should get audio from my stereo speakers. Hmm, I'll need to add a new activity to the Harmony One too.
Sometimes I wonder why I didn't go for an AV amp but I'm a music lover at heart. Long live stereo!
tabs, have you solved this yet?