Smithsonian box sets?

I may have every box set the Smithsonian label has ever released (some in vinyl), and they are ridiculously complicated to get into Roon. Lots of them are broken out into individual disks on the tagging services, so that when I group them into a Roon-compatible directory tree, the tracks have different album names, which apparently causes issues. Others are just missing; no one knows about them, including Roon. Cover art is almost completely absent; for “Folk Song America” I have to use a photo of the LP box set cover, because the cover art out there is only for the individual CDs.

Seems mysterious to me. I guess no one else buys these?