Tips or apps for dealing with file bloat

I have a Flash file that has managed to bloat up to 50+ mbs. I’ve removed a lot of the sound assets from the library that increased it to this size. But of course, the FLA file doesn’t decrease.

Are there any apps, tips, or hacks for dealing with this problem with Flash MX? I need to keep it in this version because I am passing this file onto someone who only has this version of Flash.

I would also prefer not to copy all the timelines and elements to a new file because it’s complex.

Thanks.