My friend has the current version of iTunes on both his desktop PC and his laptop PC. He primarily uses the desktop iTunes to sync his iPod Touch. However, he's got an iPhone4s (his first iPhone) expected to arrive Monday. In preparation and excitement he wants to transfer all his media from his desktop this laptop iTunes so the laptop will be his primary iTunes library. He used an external hard drive to move the media over. His purchased music shows up and plays just fine on his laptop iTunes now, but the music from his 50 or so CDs that had been ripped into the desktops iTunes are not showing up in the laptop iTunes. He gets a File Not Found error. Any ideas what's going on and how to resolve it?