Passing Data from Flash to Director
Passing data, events, and even Lingo from Flash to Director (i.e. you import your Flash movie as a Director cast member) is a pretty easy and very powerful thing (and ye, you can do it in Director 7). It's all done with Flash's GetURL action (much like you can call JavaScript with GetURL). Since I;'m not sure how your movie is set up, I'll give you a few examples; you should be able to figure you way out from there.
To play a Director Cast Member sound (with puppetSound) from within Flash, simply put this code where you want in your Flash movie (on a frame or a button, for example):
getURL("lingo: puppetSound \"name of sound\"");