I'd also urge looking at the disclaimer on the site:
The fonts presented on this website are their authors' property, and are either freeware, shareware, demo versions or public domain. The licence mentioned above the download button is just an indication. Please look at the readme-files in the zips or check the indicated author's website for details, and contact him/her if in doubt. If no author/licence is indicated that's because we don't have information, that doesn't mean it's free.
In the future, I'd suggest trying to contact the author (it feels wrong to say that the person who creates a font is its author) in cases like this. If that fails and there is no information about the license, then I don't really know what you should do, to be honest. The safe option would be to only use a font for which you are sure of the provenance.