That is my problem: every no Hi-res file appears in this view under artist "unassigned" (here you can find every no Hi-res file of the library)
Using 'Location' or 'Folder Path' as a category can be confusing. It will,
in effect, use the filepath as a navigation tree, but it's not the same thing. What it's doing is using the different levels in the selected path as nested categories, but it does
not restrict the files displayed to that path. In other words, using a 'Location' of
..\Music\Hi-Res that has subfolders \[Genre]\[Artist]\[Album] will use [Genre], [Artist] and then [Album] as
Categories for the files in
..\Music\Hi-Res, but will also include all other files in the Library. Since they're not in the specified location, they will appear as 'Unassigned'.
To restrict the view to high resolution files, add an appropriate rule to the
Rules for file display for the view. Or a better solution might be to use an 'Expression Category' that segregates high-resolution files (e.g.,
If(IsEqual([File Type], flac), Flac, Other) ), followed by a 'Location' set to
..\Music. You would then use the first category to select the desired resolution instead of using a separate view. That also has the advantage of allowing you to use the view to display all the albums of an artist, regardless of resolution.
That being said, the solution that makes the best use of the capabilities of MC is to properly tag all files with [Genre], [Artist] and [Album] fields, and use those as Categories in views. If that hasn't yet been done, most of it can be added with one application of
Fill Properties from Filename.