Importing an .swf file?

Hi everyone. I have a very beginner’s question. I found a swf file (let’s call it 1.swf), and it is an animation. I would like to use this animation as my background in my main fla file. I tried importing the swf file, but all i got was a bitmap appearing in the library.

Is it possible for me to embed the swf file into the main.fla file, I would like the swf movie to start playing automatically when the main.fla is played.

In short, in my current main.fla, I only have a simple picture and a mouse trailer. I would like to add the 1.swf animation so that it plays in the background. (I don’t have the source fla file for 1.swf)

I hope my question was clear.

Thanks for your help.