Here's my problem. I have MM4 running on my desktop with last.fm installed. I have a laptop with MM4 with last.fm installed. If I use the laptop to connect to the destop's MM4 and play music I will get one scrobble for the desktop's MM4 and another for the laptop's MM4. It's a handy feature to have MM4 scrobble what I play, especially if I'm playing music from my PS3 then it's not problem.
Is there a way to turn off the scrobbling from external clients?