The Library software lets you authorize up to six devices, so that part shouldn't be a problem. Just plug it in, and answer yes when asked if you want to authorize the device. If you look inf your account information you should see a list of devices that have been authorized on your account, on mine I have a 950, a laptop, and the Droid app. I think... I'm not at home right now, so I might be remembering wrong. But I do know that you can have multiple devices on one account.
