I have some dsf files that aren’t available commercially, so there isn’t any metadata available for them and they don’t show up in my library, How do I play them if I cannot open see the album cover in my libary?,
Are you sure they are dsf ? If they are dff then they won’t show up anywhere as Roon doesn’t support dff files.
If they are dsf but are not associated with an album, then they should appear in Collection/Tracks under the main menu. You can focus on file format from the Tracks screen and bookmark it to bring them up with one click.