I have been going through my cassettes to thin down my collection. I have a cassette of my grandfather, who was a minister, preaching. It's pretty important to me but when I tried to play it, the player suddenly stopped and I turned it off hurriedly. I took the tape out and the player had partially unwound the tape and crumpled it up. Now it stops every time I try to run it. Is there a way I can salvage it?