@Mind_Meld – Roon provides more than just a gui front end and metadata, but yah… you are right, we could add support for DSD ISO. However, it is not a trivial amount of work. For example, what happens to the copy to folder action when you are selecting just 1 track to export? same goes for deleting… same goes for moving tracks… some of these operations no longer make any sense, and some just have to work differently. There are many situations like this in Roon, and we have to consider them all.
The main reason for even using ISOs in the first place is for true gapless playback in many players that can’t support it otherwise. Roon does support sample accurate gapless playback, across files, even across TIDAL streams.
The only reason for Roon to support ISOs + a sidecar file for metadata would be because some are unwilling or unable to convert to DSF, which we will consider once it is obvious how many are in the situation.