First off, hello all, this is my first purchase from Impulse and, like the name would be implying, it was an impulse buy (but a good one).  I got both expansions for Sins, and when I try to launch them I get the following error:

The program cannot start because fmod.dll is missing, try reinstalling blah blah blah. 

This happens for both of the expansions.  Does this mean when I launch the vanilla Sins .exe I will start it with both of the expansions, or is something messed up?

Many thanks.