Roon has this feature so you can get a better look at the album art. Is that something that we could add?
Also in general maybe a layout that takes advantage of bigger windows on a desktop? Like with a side menu with direct access to playlists etc like roon that collapses away if the app is shrunk down (like roon again).
Also a direct search button from the album menu so you don’t have to first click the down arrow to move the entire album playing out of the way to search (again something roon does).
I don’t know if I’m seeing the same thing the OP is, but with PlexAmp 4.6.2, I’m seeing the album art and player side-by-side when the Side By Side setting is disabled, and the above/below layout when the Side By Side setting is enabled. That’s backwards.
All that button does is show/hide the play queue. It isn’t enabling/disabling Side By Side mode.
The largest display of the album art in Plexamp is achieved when the player is in Side By Side mode (as your last screenshot shows), but this perversely requires disabling the Side By Side option in Settings. This may be large enough for @smodtactical’s first request. The album art can’t get much larger unless you want it larger than the screen.
When the Side By Side setting is disabled, the fullscreen player looks like this:
The Play Queue is below this screen. Clicking the “Show Play Queue” command (hidden on the action menu in this mode) simply scrolls the page down to see it. You could scroll with the mouse to do the same thing (probably why the button is hidden in this mode).
When the Side By Side setting is enabled, and the play queue is not displayed, the fullscreen player looks like this (album art above, description/player controls below):
I wish Plexamp was just more like roon. An album view with fixed tracks that you can click play next to rather than this list that shifts around and is broken into previous and next. The fixed album view just feels much more stable.
And also just clicking album art to get a quick fullscreen of it feels sorta like your listening to a vinyl record or cd and looking at the art and admiring it (which imo is much more valuable than the visualizer).