Music tab and Audiobooks tab are sharing their sort by? How to separate?

[xtreme1]

1
I have a music tab pinned and audiobook tab pinned, and whenever I click Album > Sort By > Genre, both tabs are sorted. How can I separate, eg sort my audiobooks by genra and music by date added?

2
Separate nuisance, is it possible to disallow the creation of more tabs? as in lock them now that I have the only two i need music & audiobooks. The left hand panel under Library - <name> opens duplicate tabs if you click music or audiobooks :/

[xtreme1]

bump

[redwing]

Create and use custom views for each tab, then each will keep its own sort setting.