You need to sync your Droid to your PC/Mac to do that. However, if you are used to sync the iPhone/iPod touch, Droid syncing might seem a little alien. Here is how to do it:

The first problem is that your PC, or Mac, won’t recognize the Droid device even if you plug it into the machine’s USB port. So what you have to do is download the Motorola Media Link, which is a look-alike of the App Store (as it was in a distant past).

Well, after that it’s a breeze. Jack in your Droid to the USB device and sync the files from your Droid to the PC/Mac. Or just download apps onto it.