ed2345,
Thank you for your reply!
I'm not sure I understand what you mean by "set your main songs library and all playlists for Songs view."
In the sidebar, I click Songs below Library, and that shows all my songs as a list. I can choose which columns to display using View > Show View Options, and I can rearrange columns and sort by them. That's what I mean by Songs view.
I clicked each playlist and chose View > As Songs (does not work for Genius Playlists), and now those playlists are in Songs view.
If I select Songs in the sidebar and search for a song, the found song is displayed in Album view (only the songs from the album, no columns with headers). If I then play the song, Command-L does nothing.
I used to be able to click the 3 dots next to the song title (at the top of the window) and choose Go To Current Song, then click Songs in the sidebar, and the list would automatically display the selected song in the list, as if I had played the song right from Songs view. Now, Go To Current Song displays the song in Album view, and clicking Songs does nothing -- the list doesn't scroll to the current song.
Does that make sense?