For those of you who have always set your bookmarks to simply go to fun-in-the-murky.com all is good in the world. No change is needed as the base '.com' will properly redirect.
However if you go to fun-in-the-murky/mt, you need to change it to fun-in-the-murky/wp or simply the '.com' root domain name.
The archives (everything up until this point will still retain their current URLs. No changes there. Only the section of the web-site that is updated has the new URL.