Maybe a suggestion ...
I have many Box Sets with CD counts ranging from 3 - 201 discs.
I set up 3 Custom Tags , "Box Set", "Disc Name" , "Disc Volume"
Then set up a View Box Set> Disc Volume> Disc Name for JRemote (and Std View) with Disc Volume optional if your discs aren't "volumed"
As you Tap each section of the view you see a screen with each disc in the box set showing its name and then you can select , its a bit like seeing the individual (virtual) CD's in a Box Set
It takes a bit of effort to set up but I find pays dividends.
This is my Standard View, JRemote is a dead copy ...
Just A Thought
I'd prefer to keep all albums together rather than split box sets from other albums, if I can, but I'll try that as well.
Although it doesn't appear that feature requests for JRemote will lead to anything, what I would like to see as a play option, on the album level view in JRemote, would be something like:
Play Now
Play Now Disc: (drop down number of discs)
Play Next
Play Next Disc: (drop down number of discs)
(As an aside, I've often considered Roon as it would seem (I haven't tried it) to offer a better remote control experience over JRiver. I've stuck with JRiver because I like everything else it does from organization to tagging to playback (I only use it for audio). A better remote experience is, in my opinion, a way to enjoy a program, such as jriver, more. I assume most people that use JRiver to play Audio are doing so by interacting with a tablet to control playback and making that experience better would give JRiver a leg up over programs like Roon for people that don't care about all of the additional info that Roon provides. But this is another thread perhaps...)