Ignore these partcular "errors".
Flash assumes that all  .as  files are classes.
But most of mine are not. They're just plain text files with code in them.
I give them  .as  extensions so that I can easily open and edit them in Flash.
(which is handy for its syntax checking and code-completion features)

But you could just as easily rename my music system:
"makeStereoMusic.txt"
and include the code using that filename.
It would still work the same and flash won't complain about "interface errors"
