Feature description:
When custom strings are used to for example combine Album and Year like this: Album (Year), the user should be able to specify in the settings, where tapping on the resulting string in Now Playing navigates (to the album page for example).
Problem solved:
When using the “Album” preset, tapping on the album in Now Playing navigates to the album page. Same for “Display artist” for example.
However when using custom strings, tapping on the resulting strings in Now Playing does nothing.
Brought benefits:
It would allow to use the customization that custom strings allow while not losing the navigational benefits of being able to quickly go from Now Playing to the album/artist etc. pages.
Other application solutions:
Additional description and context:
As an alternative to setting one on-click action per custom string, it could also be possible to navigate to the parts of a custom string that lead to pages.
So for example if you had a custom string that included artist, albumartist and album, clicking on the part of the resulting string of each of these variables would navigate to the respective page. But I guess that would be harder to implement.
Screenshots / Mockup:
(and because he is a nice guy). I proposed it more as a nice-to-have function, but hear hear, others have the same idea! 
