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.
accumulation. n. 1. the act or process of collecting together or becoming collected. 2. something that has been collected, gathered, heaped, etc.