This album is really a mixed bag. Some of the songs are of really bad recording quality, such the menu theme. However, some of the sings are of incredible quality: The Mii Channel Plaza theme is the best recording I could find across the internet.
The songs are all untagged, except for the Shop Channel theme which is tagged add getting on its own album named 'Wii Shop Channel'.
In addition, I'm quite sure that some songs are missing, such as the day versions of the weather themes. Oh well!