Mute button shared object between several swfs

1

i have a shared object that controls the mute function but i need it to work onother swfs
can anyone give me a hand i was thinking of using a browser cookie but it looks alot harder so i thought i might do it with shared object

_root.getvolume = SharedObject.getLocal(“getvolume”)
if ( _root.getvolume.data.volumemute == undefined) {
trace(“null”);
} else {
trace(“hit”);
if (_root.getvolume.data.volumemute == 0) {
trace(“off”);
bt.gotoAndStop(2);
}else{
trace(“on”);
}
}