Button sound problem

Hi all,
I have a page with background music and an icon (a button) which plays a sound clip on roll-on. The problem that I am having is that the background music continues to play together with that of the sound clip. I do have a stopAllSounds command on the button on rollOut. How can I stop the background music on RollOn to the button, yet allow the sound clip to play?
I have tried numerous AS combinations with no success.

Thanks, Bruce