°Muting audio

Hello boys and girls, my first post here in this lovely forum:love:

I´m making af movie and I want to be able to mute the audio using a button. How do I go about doing this cause the audio is synced to some animation and when the user turns the audio back on the audio has to re-sync.

I´ve put the audio and animation in its own movie clip.

I have no idea how to accomplish this, would really like some help here.