jon, If I had any more options to give you I would. Have you tried the firmware I left you links for in one of your other post?
As I explained in that post you have to find as many firmware as you can and try them. There is no quick fix or magic firmware it is just a matter of trial and error.
If all the firmware you have tried have not helped your player then install a newer version of MP3 Player Utilties and try them again.
I just did a Google search of "MP-693C-SL" and got 2 pages of links, go and check them out.
The same search on Windows Live gave me more links like this:
http://www.alexejw.net/firmware/MP-6...5.35%20full.7z