Thanks. I'll take a look at Hi-Fi Cast. Although it appears gapless playback is for "compatible" (whatever that means) local files only. Locally I have no issues as I have several network players that handle that task handily.
My issue/gripe is with streaming. Since the CCA does not support gapless playback natively, when it "takes over" the stream it breaks that feature of capable streaming apps. boohiss.
No Bluetooth ever? That's a tall order for me as I want my tunes with me when and where ever I go with virtually zero hassle and shenanigans. Outdoors and at the beach, the relatively small SQ hit is completely indiscernible. Different strokes.