So I go back to "purchases through the iTunes store, and now there is no "cloud" icon over the song, though it's correctly listed with my purchases, and "clicking" in the area where the download cloud should be says "do you really want to hide this purchase."
iTunes 12 you.... worthless unreliable #***!!%^*!@$@!!!"
Another "fun feature" is creating a genius playlits and setting it up with say 25 songs.... the next time you open it on your computer the song now has 3 songs, or maybe 5 songs, and the original song on which the playlist was built is not present.... Click "select 50 songs" and they all reappear, but now the song it's based on is down the list, and no matter how many times you "sort" the playlist the original song won't appear at the top...
.... or how bout this one.... try to delete the playlist, and recreate the playlist from the same song. "iTunes sends back a message. "No playlist recommendations for this song, try updating genius." So I update genius and try again... no such luck...
Buggy piece of .........
(I wonder if anyone from development team reads these complaints)