We have our iMac and our Windows laptop set up for iTunes home sharing. I can play the laptop's tunes on the iMac but can't play the iMac's tunes on the PC. We've tried de- and reauthorizing the home sharing thing and are using the same account login, but it's still not working. The PC can see the library from the iMac, but when we double-click on a track, we get an "import not authorized" message. Both machines are running iTunes 10. Any ideas? Thanks!