The following file bears the proof:
The method of discovery is simple. Listen carefully to the first half, which is a direct extract from the theme song of the television show "Mr. Ed". Then pay careful attention to the second, and prepare to be shocked.
The first half sings: "Go to the source..."
and the second half clearly states: "THE SOURCE IS THE DEVIL!"
There you have it, folks. There can be no doubt about it: Mr. Ed is Satan, or is otherwise under his employment. Perhaps part of his PR department, we have yet to determine. Any help you may be able to provide would be much appreciated.