Master On/Off Audio Button for Multiple swfs

I need to create a “master” On/Off Audio Button that will control audio for a series of swfs loaded into a “master” swf. Each loaded swf will have a Media Display or FLV Playback MP3 progressive audio file supplying audio with cue points for that imported swf.

What ActionScript would work for a “master” On/Off Audio Button in the main swf that would control audio for all of the loaded swfs so a setting in the “master” swf would effect all loaded swfs without the user needing to reset the On/Off Audio Button for each swf?

Thanks!