Preloader in main leads to external? possible?

HI everyone!
Im working on some external swf files with sound in it, they include preloaders.
I have a theoretical question. Is it possible to crete a preloader which will be in the main movie, and will lead to external ones? (i would assume levels)

File Im working now has 3 swfs with own preloaders, there is a small issue, it occures only when downloading one track, user click other button.

I’m thinking that going “around” that problem could be puting all tracks in 1 external with one preloader, but that would take longer time to hear any music…or on timeline with 1 ppreloader do labels so on each click sound will download own “label”… does it make any sense?

Where i could read about subject options? Thanks!