The New Songs I Just Purchesed Are Not Playing Completly Why?

1. In iTunes, click Purchased (below Store).

2. Click Download Previous Purchases at the bottom of the list of purchases.

3. In the page that appears, select a category.

   iTunes shows you which of your purchases are available for download. You can view all of your past purchases, or just the                           ones not currently in your iTunes library. Items already in your library aren’t available for download.                       

   If you select Music, you can view your purchases by song, artist, or album. If you’re using Album view, click an album to                           see which songs on it are available for downloading.                       

   To search for an item, type its name or a keyword in the search field, and then press the Return key to view your search results.

4. To download an item, click the Download button  to the right of the item.                       

   To download all available items, click Download All.

You can download previous purchases on a total of up to ten devices and computers, combined. You can authorize up to five computers at a time with an Apple ID.                 

To find out how to download previous purchases to your iPod touch, iPhone, or iPad, see the documentation for your device.