Now before you sell your background capable smartphone, put on a cape, and try to jump off the roof, you may want to first know that it isn’t true background processing still.  It isn’t like you can open an app such as Pandora, get the digital bits flowing and then back out of it expecting to still hear your streaming audio goodness in the background.  That still won’t fly.  However, thanks to mobile Safari’s latest updates and support for HTTP...