Ok I found this on a facebook group so I am just going to copy and paste it.

I just made a audio file of our Winchesters singing (or Attempting to sing) Silent night for my Xmas ring tone
feel free to use:
(Right Click and "SAVE TAGRET AS")
link

Ok so I hope it works, it worked for me off facebook.
(i would of put it as a link but wasn't sure it would work properly)
(Oh and it was posted by some one called Kristy Adams, just to give her the credit and thanks)