AS passing to index from container_mc

I am having 2 issues. First being attaching sound to MC’s on movies that get loaded into container_mc held on index.swf. The sound can be heard if movie is played alone however when I test Index.swf that holds container_mc the movies within that have sounds on MC’s dont play. Any ideas?

Next question I have is simiular I have made a contact form and once again viewing swf alone the drop menus will work and buttons will fire, however once I test it by opening index.swf which has the container_mc that loads contact_mc the drops dont work and display data and buttons dont fire. What is up? Do i have to pass variables through from index.swf?

Thanks yall for any ideas.