I always seem to end up searching for half an hour to figure out how to get get_iplayer working under OS X Snow Leopard, so this is more a reminder to myself than anything else.

1. Download the latest version of get_iplayer
2. Extract it to ~/get_iplayer/
3. In terminal, run
   ~/get_iplayer/get_iplayer
4. Download this version of flvstreamer and save it as ~/get_iplayer/flvstreamer
5. chmod 755 ~/get_iplayer/flvstreamer
6. ~/get_iplayer/get_iplayer --flvstreamer ~/get_iplayer/flvstreamer --prefs-add

Now just use get_iplayer as normal:

Ta-da!