not shooting the messenger, I'm v.grateful for all your advice as ever..
but I'm a bit iffy buying a new BDP, there's nothing wrong with my current one!
Nobody's as surprised (and disappointed) as me at how lacking the Mac is with this Hi-Res/Surround stuff.. I may have got on board with the whole using computer route if I'd got a PC instead.. the only thing I can easily get sussed is DTS 5.1 wav's (like DTS CD rips, etc) but I have to play them back thru VLC - not the most user friendly interface, to put it mildly.. if someone could "do an iTunes" on the surround music catalogue (i.e. sell the music and give you a way to collate it and easily play it back from within one interface) they'd get my business!
It's a surprising turn of events to be sure. Maybe Apple can explain the situation, I can't.
exaSound in Canada is doing a good job of creating their own sound drivers to bring Multichannel FLAC (up to 384k) and DSD (up to Quad DSD 256fs) to the Mac as well as Windows on their e28 DAC. More expensive than an Oppo ($3,299 USD, 3199 EUR via Native DSD) but an excellent way to get in the Multichannel download world. (By the way, the Native DSD price on the e28 includes 7 Free Downloads - Stereo or Multichannel DSD or DXD, your choice. Only for EU residents though. US fans are out of luck here).
https://hardware.nativedsd.com/devices/exasound-e28
There are a couple more Multichannel DACs on the way. I'm sure they will have Windows support. Not sure what the Mac story will be.