How to get non expirable links from mediafire...?

i hav been thinking that its not possible.But someone once gave me a link in mediafire for a file,after i loaded it,the download started instantly!!!.It worked as a direct link.But i dont remeber that guy.It was someone from hamachi.

so i ask here for the information because the links that mediafire gives are expiring after 1 or more hrs..so i cant schedule my downloads from mediafire.

anyone plz help me...