Networking company Sandvine has released a new report that breaks down North American iTunes traffic on fixed networks, examining how iTunes customers are using the service. Surprisingly, the largest portion of iTunes traffic is not generated from streaming, but from the App Store. Direct App Store downloads account for 38.1% of total iTunes traffic, while 36.15% of traffic comes from iTunes streaming, which includes movie and song previews, along with iTunes Match. With iTunes Match, customers can stream music and video purchases to both mobile devices and Apple TVs. Apple's streaming traffic may increase in the coming months with the introduction of iRadio, the company's rumored streaming radio service.