In Sweden you are obliged to pay your lawyers and such.
However, if you win the loser COULD come to have to pay for your lawyers and what not.
Howeverx2 IF the person doesn't have enough money to cover for that cost, you still have to pay them with your own money and hope you get the rest in a reasonable amount of time.
The fees can be quite large if the criminal is in a different country, then you have to hire a lawyer in that country to represent you.
That's what i gathered from the very brief conversation i had with him.
But im looking in to it a bit more.
The amount of money you could be compensated with also vary from country to country, so it's hard to say.
So this estimation is quite individual
Edit: Also, people who tend to this kind of stuff (steal songs) prob don't have allot of money.
So, the chance for me having to pay for that would be high.
Editx2: However, since this dude seems to just continue doing this. I really want to nail him big with an actual lawsuit!