Group display

[simbun]

Hi @simoncn,

I was just wondering if there's any chance of modifying the way GROUP currently works, as treating it as musicAlbum is a little jarring when it does work (tested BubbleUPnP and Hi-Fi Cast, although in BubbleUPnP the tracks in the GROUP aren't counted towards the album total) and in other apps like Lumin it causes them to be treated as separate albums (unless I'm missing a config option).

I know BubbleUPnP supports inline separators used for WORK metadata on Qobuz which makes it look something like this:
   

I understand that the ideal solution would be one that works for all control points (which is probably what you've settled on), but that seems to be resulting in a sub par experience for all.
I understand if you don't want to have to handle this all at runtime (identifying the control point and customising the response), so maybe a similar option to upnpCustom where it would be set once (per profile)?