V4 I/F tweaks

Rarely use streaming apps, and also find this new I/F less useful for my local library purposes. 

Degraded in several aspects 

iPad splitting Now Playing from Play Queue so to and fro if wanting to see next up and or skip a few tracks. No media controls in Play Queue page

MacOS - Now Playing and Play Queue on same page, but the volume slider requires and additional step to enable it from the "speaker circle" which seems unnecessary especially if a user needs to quickly lower the volume.

- extracted from "freeze" posts comments.