Well I followed a thread from the feed tonight about the iPlayer for mac on to find a dead link. The rumour is true, although it doesn't seem to be working yet. From the small graphic, I can only presume when you click on a show you get the option to download from the bottom. I am registered for the lab but its not working on Safari or Firefox. Anyone else have any luck?
http://www.bbc.co.uk/iplayer/labs
http://www.bbc.co.uk/iplayer/labs