Before the iPhone, the iPod, and iTunes, there was Napster. The original gangster of digital music distribution has undergone many changes since its heyday as a pirate's Shangri-La, though this latest one seems to be the most fitting. A new app for the aforementioned iOS devices as well as the iPad has been launched, giving you the full Napster experience in a more portable form factor. That means that for $10 a month you can stream and cache music from a library of 10 million songs -- yes, offline listening is available too -- essentially turning your iDevice into the Apple equiv