I'm not sure what the buttons actual name is but when you hover the mouse over the 'Song Title' or 'Artist' it usually has a button you can click which will search for the song title or the artist. Any idea how to activate that button again?
Also the shortcut to 'DSP Studio' and 'Playback options' has changed. This is the button near the 'repeat' and 'shuffle' buttons. Before the update from beta to the full version I could right click on this button and change which player I am controlling. This saved me time since I didn't have to choose the device from playing now then go back to where all my music is.