Try adding an "I" to the end of the file extension name. You will get a nasty response from the OS, because it doesn't think you should do that.

Normally, that is correct, but in this case, I think none of your apps are recognizing ".mid" as a ".mid
i" file.
Of course, you can probably find some application that actually uses the ".mid" extension...but it's probably a Windose app...
