It's probably going to be a bad HD. The happy clicking of a normal 2.5" drive can easily be heard when the drive is handled manually, outside of the empeg. A repeated clicking while trying to start up is not normal. The bad cables I've had always caused the drive to be silent. The one player I bought for Papinist that clicked on power-up had a bad 30GB drive. Diagnosed by David the day I sent him the message.
If you were to have read his recent follow-up to another thread, you'd notice there's a lot of mail coming in to the support address. Being patient is probably your best bet. He'll get to you.
Bruno