Smoothly moving particles

I've set-up a path for my particle emitter to move along. In my mission world.

But currently I can only get the transform of the next node and set the particle emitter to that transform. This isn't very smooth.

I really want it to look like how it is in the mission editor when you move a particle emitter. I tried looking in to that but didn't get very far.

Has anyone got some better ideas/ways to implement this?

thanks!
Edward