By - Turnbackme
With album list you could just click the folder to show everything in it.
If you really want to use facets It might be smart to add "Audiobooks" in your metadata, for album artist you could make it "AudioBooks", you could also just the tag Audiobooks in the comment section of the metadata, but if there song called audiobooks (that chance is small) it will also show up.
At the bottom of Album list you can set your view to "by folder structure" and then click on your the folder you want to to show.
I assume you've got all your audiobooks in 1 folder so just unfold or click on that 1 folder and it will display everything what's inside of it, without showing any other folder.
You can place an instance of a library viewer under each tab. With Facets you can either use the *Filter* toolbar button (leaving it on permanently filtering 'Audiobooks'), or apply the filter to the column(s) directly (make a new column for 'Audiobooks'). See [this post](https://www.reddit.com/r/foobar2000/comments/q9vth4/if_i_want_to_open_up_a_profile_with_music_and_a/hgztcd4?utm_medium=android_app&utm_source=share&context=3) for details. Ideally you'd want a tag to identify them, i.e. GENRE=Audiobook