Just in your torrent client add magnet like this (replace info hash with one from website) magnet:?xt=urn:btih:INFOHASH
For example, if your infohash is 1234567890abcdef1234567890abcdef12345678, the full magnet link would be magnet:?xt=urn:btih:1234567890abcdef1234567890abcdef12345678