Need Shared Media for Multi-Side (sub-domain)

Topic says it all. I am sharing a menu among all sites in the network, but need them all to use/point to the same media.

So as I rotate the menu backgrounds, all sites point to the same ID images. I’m already using Multisite Master Shared Menu by Ben Greely, but because I want the same exact menu on all sites, they need to point to the same images.

This isn’t just for menu backgrounds, but also for images inside the mega menu.

Using linux, so all kinds of file system options are possible.

Any advice appreciated!

[“Support Question”? Well, it isn’t “broken”, but does that still qualify it? I’ll leave it ujchecked for now…]