insulation for attic and interior walls

I have an insullation question for anybody who knows a lot about it.....

I live in an old house and there's a couple things I think I need to insulate.  1 - sound wall bc it's too loud between living room and bedroom... 2 - attic is uninsulated and now that it's getting cold, my bills are huge and it's still cold. The exterior walls are insulated, but none of the attic.

Also, is any insulation bettter than any other?  Can I use the same type of insulation for both of those uses?

Thanks