Thanks for the reply. I thought about that. At this point, other than RR's typical web-based players (like the HTML5 player which doesn't support tags anyway), I don't use or have access to the other apps to see how they might handle stereo-tags. I didn't know if the apps/players have been updated to be "stereo-aware" and whether they can show visually-split or -stacked or -concatenated tags to indicate left and right signals separately. From your reply, I gather that they still cannot. Multiple mono-feeds are certainly the standard; but lack of stereo-tag support doesn't help encourage the use of stereo-feeds.
Thanks,