Removing "free" might be a good idea from a legal standpoint, but in the case of obvious pirates like these guys, I don't think it'll make any difference at all. Clowns like these wouldn't be deterred if you put a warning there saying "Copyright Protected under penalty of a long, slow, and excruciatingly miserable method of execution that would make Tomas De Torquemada himself turn white with horror."
The way you deal with people like this is with a sharp lawyer which unfortunately, a lot of us can not really afford. That or bring the illegally nicked material to the attention of the whoever the website is being hosted from.