Sure, np. :)
As far whether the math holds up with M-M experiments my short answer is: yes, I think so. The M-M experiments are thought to be a decisive contributing factor that later lead to the development of Special Relativity and the proposed assumption that the speed of light is invariant; it’s been awhile since I’ve taken advanced physics classes though, so I don’t have the specifics or the math at the forefront of my memory.
This might fill in some of the details better for you: http://en.wikipedia.org/wiki/MichelsonMorley_experiment#Special_Relativity
Thanks for the link.
/johnny