The link that you gave bekow doesn't work. You could certainly compress the images - try using the jpg compression built into Swish, but it would be nice to see your swi file (attach it if it is not too large, link to it if it is) to see if there are other issues such as needing a preloader or movie speed (frames per second) that are the problem. I often make swf files that exceed 15MB and once they are loaded, using a preloader, there is no choppiness.

Cheers,

Flick