Which seed box?
2) Find the torrent in the list of files.
3) Right-click on the file you like (e.g. the big .mp4 file) -> Download. Chrome will download it like any other file and save it anywhere you like.
4) Profit!
If there is a large number of files (e.g. full TV season), use an FTP client. Instead of right click -> Download on a file, do right click -> Download on the entire folder, or drag drop to where you like it on your PC. Can also work just as fine on any FTP client for Android/iPhone.