There are two points I would like to touch on here. I am an expert on neither, so read with caution.

1. Getting an email address from an IP address is not the easiest thing to do (though it is possible). That would tend to make me believe that this was an email type scam. Try to find out if your 'film media network' even exists.

2. If you do not have some type of firewall software running, then, it is possible for anyone (in the world) to use your computer to do anything (usually a Trojan program). It's scary but that is the way it is.

As far as I know, there is no way for anyone to use Limewire for anything other than sharing the files that you want to share.

Ken