Multiple swf sound sync

on one html page i have two separate swf files loaded into separate areas on the interface. one of them is a menu bar with sounds attached to animated rollover buttons. the other is a simple soundloop play/stop panel. here’s the problem: when the ambient music is playing, there is a significant pause before the rollover sounds are triggered by the Over event; when the ambient music is stopped, the sounds play as soon as the cursor moves over the button, as they should.
i just tried putting the ambient into the menu swf, and the delay is still prominent. i’ve checked other flash sites, including 2advanced.com and theirs too has the pause when music is playing. this makes me think there’s no solution. but i’m asking anyway.

is there any way to avoid the delay?