PaulyT said:
...I'm pretty sure it's not just the 885, because I could use my older hdmi dvd/cd player (actually also a Sony) to play music without the TV, so seems it's something to do with the hdmi handshake on the player...
Does the 570 required the screen to on be for regular CD playback? I've done a lot of systems which use the BD player for CD playback (many with Sony players) and I haven't had that issue.
As an aside, if the disc is already in the player when you want to listen, playing any audio disc on any BD player I've seen is a PITA w/o the display because of the menu navigation required. If the disc is inserted anew, the player will start it and all is well, though. This is one of the reasons I recommend people have a dedicated CD player instead of using a BD player for CDs. (Of course your situation is different than the average Joe's.)
John