Getting total bytes on more than one file

I have created a stack loader.

That way I can load two files in succession. Usually a section and a video intro. I am using this so if the user doesnt want to veiw the intros they can just skip the load altogether. I hate waiting for an intro to load that I am just going to skip anyways which I see all too regularly. (any way.)

Is there a way to get the total bytes of both files without starting the load.
The issue I am having is that the preloader resets once the second file loads, and can be confusing for users. As it seems that the file is loaded and then the bar jumps backwards and starts another load.

So far the only way I figured out how to do this is to start both loads get the info then kill the load, only to restart it once the first file has loaded. But as you can see this is cumbersome and not an ideal solution.

The other thing that I thought of was what if I loaded the smaller file with loadMovie and used the loader to load the larger file. is there any guarantee that the smaller file will always finish loading first?

Any thoughts or guidance would be appreciated