Library - export to first frame... but do i have to?

working on a flash app, and i need to export texture objects for actionscript, ie “Export in first frame”
but when i do that, the first frame becomes 13mb, nullifying my preloader. and when i uncheck that box for the textures, they no longer function in the app.

i know you can set classes to be exported in any frame you like. is there a way to do that for objects in the library?