e.g,there are two independed and noninteract swf file in
different domain,all of them call the method
SoundMixer.computeSpectrum () ,
1.if opening them in different brower instances, the method
SoundMixer.computeSpectrum () worked correctly.
2. if opening them in the same brower but different
tab,securityError #2121 ocurred
not sure i am 100% correct on this.. but i believe flash as3
can only have one instance of a SoundMixer managing a sound on a
computer.... if you have more that one.. it doesn't work...
i will need to verify that.. but i heard that there is an
issue with sound Management in Flash