[X4U] Sound Output

[faramineux]

The USB Bose SoundLink Audio streams the music from my computer to the  
Bose Radio on the floor below beautifully. For this to happen I have  
to set the System Preferences/Sound/Bose SoundLink Audio. The problem  
with that is that I cannot no longer listen to the same music at the  
same time on my computer. Is there a way to be able to do both? TIA

G5 DP 2.00 GHz  / 1.5 GB DDR SDRAM
Mac OS X 10.5.8
"Our processors are California wine cooled"