Music Library (Minimserver) No Longer Visible

[simoncn]

(13-09-2016 23:14)Afveep Wrote:  Everything in my network is wired, except the iPad controller.
Router/wireless is Eero; there is a NetGear ProSafe Gigabit switch and a small TrendNet gigabit switch in the path, but everything was working perfectly from day 1 until now, so while I really don't know what I'm talking about, I'd be suspicious of a multicast problem as these are not managed switches and I haven't "futzed" with them.

Can you try using a UPnP control point (such as Linn Kinsky) running on the wired Windows PC to see whether it can find MinimServer? If MinimServer is visible to wired UPnP control points but not visible to wireless UPnP control points, this is likely to be a wireless multicast problem.