Sounds in Flash MX

Hello,
I’ve done a search for sounds and can only find tutorials pn adding them in Flash 5.

this is basically what I want to happen. On a specific frame in my movie, I want to add a sound. I thought it would be a simple case of dragging and dropping it from my libary, but it appears not.

Can someone shed some light on the problem for me.

Cheers

:q: