Since the iPhone has no SD card slot or anything similar, you’re pretty much limited to a maximum of about 16 GB of onboard storage for music, photos and videos. The next generation of the iPhone may up that to 32 GB. But if you’ve been collecting MP3s since the dawn of Napster, 32 GB still might not be enough space for your whole music collection, let alone a handful of videos. But with an iPhone, you’ve got a nearly constant connection to the Internet, and with an app called OrbLive, you can access almost any media file on your home PC, provided it’s turned on.