Apple Sneaks in Music Streaming from iDisk on the iPhone
One of the most requested features of the iPhone is music streaming, and it seams that Apple has giving it to us. Well, that is you have MobileMe, as Apple has just updated iDisk for the ability to play music files from the your computer in the background. This basically means that you can stream any music files that you have in your iDisk folder and play them over the air while it being in the background. The update for iDisk is available on the iPhone, iPod Touch and the iPad and you can stream music to multiple devices at the same time.
Source IntoMobile