1 Go to Preferences (On a Mac, this is under the iTunes drop down menu. 2  On a PC, iTunes Version 10 or older, this is under the Edit drop down menu. 3  On a PC, iTunes Version 11, this is under the square icon on the top left of your iTunes window). 4  Once you've clicked Preferences ,make sure you are on the General tab.
To aggregate is to collect many units into one. If you're writing a novel, you might create a character who is an aggregate of five or six real people. Aggregate comes from the Latin verb aggregare, which means to add to. As a verb it means to collect into a mass or whole. You can also use it as an adjective, as in your aggregate sales for February, March and April. It can also be a noun.
: The inert filler material that makes up the bulk of concrete. Usually sand, gravel, and rocks. Fibers and reinforcing bars are not considered aggregate. : An undesirable process of mix water separating from the fresh cement paste or concrete while it is being placed or consolidated.