So I have never had an iPhone, only an ipod touch. I have an iTunes account with 100's of purchased songs and CD's I uploaded to it. I got an iPhone yesterday and as soon as I clicked on Music, all the purchased songs were there and able to be played right away. QUESTION: If I click play on these songs, is it using data / wifi to stream it ? I don't see how it could have downloaded all of those actual files so quickly.