New research by the NPD group confirms a suspicion. Much of the world wants to see iTunes streaming their music from the cloud. And many will pay to make it happen.
According to NPD's polling of 3,862 iTunes users over the age of 13, roughly 25% of iTunes users would be interested in a free-from-anywhere library streaming option—that's a total of 13-15 million customers in the US alone.
Many customers would be interested in an unlimited streaming pay service as well. Provided that it supported multiple devices, NPD estimates that 7 to 8 million iTunes users would be willing to pay a minimum of $10/month to subscribe.