How to repair snapped tape?

I'm after any one that can help me, i have a audio cassette tape that is over 25 years old, the tape has actually snapped and not connected therefore can not be played, i am after any places that can repair the tape or if i can repair it my self, this tape is very dear to my family and holds alot of childhood memories. I made a copy of the tape a few years ago but that tape somehow was taped over, any help would be much appreciated.