Hi. Firstly, I will said you that both the matter are basically unlike. Also, I would suggest you that should reload zune and also reload windows 7 64. Reloading them, may assist you out and thus resolve your matter. It is a very easy thing but sometimes, acting such main things can fix the trouble. Also, if the settings of the music and the social activity sharing has been adjust to friends only, then it will be a zune matter that you are not able to view the music activities.