Coordinating sounds and movieclips

I want to make some animations that go along with a sound but the problem is whenever i import a sond clip, it goes to just one frame. This is good and everything but it makes it almost impossible to coordinate my animation with the sound (because i can’t see the or live preview the sound) if that makes sense. Does anyone know where i can find a way to coordinate animation with sound easier than having to preview the movie every time i do something.

Another problem I am having to sound is with my buttons. I am using movieclips with AS for my buttons so can someone tell me the AS to play a sound clip in my library on a onRollOver. Thanks

mike