Few thin...
in as3 im sure you know sound control is not as simplistic but because of that we can create intricate flash games, etc.
i do not see the coding obviously but i think by assigning each song/sound to variable ,so you can individually control when to play and not to , vs as2 where you can just stopAllSounds; followed by a new sound in the timeline.
// make sure you have these imported.
import flash.media.Sound;
import flash.media.SoundChannel;
// create your variables for your sound instance and one for a sound channel
var soundone:ClassName;
var channel:SoundChannel;
// create an instance for your sound
soundone = new ClassName;
// then attach your sound to the sound channel like this
channel = soundone.play(); //
// then to stop your sound all you have to do is this.
channel.stop();
depending on exactyl what you want done you can also use
SoundMixer.soundTransform
sorry if you know this and what i said is useless
I love the vibe though and the clean lines and overall design, but my uh ehhem flash doesnt seem work :/