Was just playing a game and started Cantina right before shooting the waiting Death Star. Since the mode keeps running while the video sequence plays for the DS start, there's not much you can do but let it expire. The only way you know when it ends is hearing the cheesy end of the campy Cantina song (if you've played the game, you know it--the "ba-da ba ba-da bum"), that comes in out of nowhere during the DS startup audio sequence. Well, this time the mode ended and the little "wah-wah" song played exactly as Alderaan was being blown up in the vid sequence, which made for an awesomely ironic sound effect for planetary lasering. I suggest everyone who has a DESW try it!
It also got me thinking, is this something that could have been fixed in the reworked code (mode pauses during ds startup sequence)?