how do i download my itunes music to my pc or usb?

Hello davetammyevan,

Thank you for using Apple Support Communities.

For more information, take a look at:

Download past purchases

http://support.apple.com/kb/ht2519

Download previous purchases on Mac or PC

Make sure your Mac or PC meets these system requirements:

• iTunes 10.3 or later
  You need iTunes 10.6 or later to download previously purchased movies and TV shows.
• iTunes account in a country where iTunes in the Cloud is available

iTunes Store

1. Open iTunes and go to the iTunes Store.
2. Click Purchased in the Quick Links section.
3. Select the content type that you want to download (Music, Movies, TV Shows, Apps, or Books).

Have a nice day,

Mario