A couple of months ago, Oliver had a moral dilemma involving piggybacking on another's WiFi connection which he shared with us here. Well, it seems that Oliver isn't alone. According to this news article, piggybacking is becoming common and it can be a problem for the people that are paying for the service.
Originally posted by NY Times via CNetPiggybacking, the usually unauthorized tapping into someone else's wireless Internet connection, is no longer the exclusive domain of pilfering computer geeks or shady hackers cruising for unguarded networks. Ordinarily upstanding people are tapping in. As they do, new sets of Internet behaviors are creeping into America's popular culture.
We've already discussed the moral side of this issue. Now, I'm curious if anybody has had people mooching their WiFi and how they were affected?
"The most likely way for the world to be destroyed, most experts agree, is by accident. That's where we come in; we're computer professionals. We cause accidents." - Nathaniel Borenstein
Copy your library to the hard drive, change the preferences, and see if it works. But don't delete your local iTunes library until your sure everything is okay on the external drive. That's what I'd do.