The ever popular online radio service, Pandora, is available for download with a new version that takes advantage of iOS 4.0’s multitasking capabilities. This a great feature for Pandora as a service that will allow it to stream more tracks to mobile users. And for mobile users, this means you will be able to listen to music while writing emails, playing with Facebook or doing a host of other activities. Your iPhone 4 just got closer to becoming a mobile PC.