Consider to move “Show Playlist” button to menu on the left. In future we will have EQ icon there instead, I hope.
This doesn't make sense right now, because both the button and the playlist are on the right. If we moved the button to the left, it would be far away from the thing that it affects, which would be a little weird. If EQ settings get added in the future, there are many options for where to put the button to access the feature, Perhaps even on the left side of the window. :)