Sound Problems

Hi guys
Im making a bud CD rom, and building it in flash. throughout the CD, there is the option to play various music tracks while browsing. I have these tracks set up on 5 buttons. Each button has a stop all sounds command, and then loads the music from the library.
Further on in the CD i have some buttons that have a voice over loaded in. The only way i can figure is to a stop all sounds again. This works fine, but it would be good if it would reduce the volume of the music playing, play the talking, and then increase the volume of the music.
Is this possible
Paul