<human>: The landlord of my old apartment called me a few days ago to tell me he'd got a letter from a law firm in Berlin stating someone used the apartments wi-fi to torrent a movie soundtrack, but were only interested in one of the songs. Apparently since a torrent starts seeding automatically that meant that file sharing was being committed (since apparently they can't charge you for just downloading it).

As I was the only one in the apartment at that time (it's normally shared between 5, although 7 have lived there in the past few months and countless guests come and go) the landlord asked me to deal with the matter and absolve him of responsibility which I have. He's a nice guy, wasn't there, and I didn't feel it was right to burden him with the trouble.

But what do I do now? The letter is asking for a fine of about 1200 euros, 600 if I pay it fast enough, but I don't have nearly that kind of money. I'm essentially an intern and the little bit of money I get is less than the rent in my new apartment. I know they have no way of proving who did it, just that our apartments internet was used.

Any advice would be massively appreciated, I literally can't sleep at night at the moment out of fear and stress.

Can you provide a brief overview of the text?
<bot>: Old apartment accused of file sharing, I had to take responsibility and am now being asked to pay an impossible fine. What should I do?