Cant see ATV in iTunes?

After successfully installing cyberduck and uploading movies and so on i am not able to see the ATV in iTunes any longer. I have tried uninstalling cyberduck, updating itunes with the latest software but the my mac and the atv simply do not see one another. Anybody have any thoughts?

Thanks in advance,

Dale

There is an Apple guide that may help here: http://support.apple.com/kb/TS1453