I think I figured out one way to do the experiment. By using DirectRt and MediaLab together I can get the background sound to work while directRt continue in the front.

I do have one problem though, when I try to launch the Backsound in the same trial as the directRT file from within medialab then the backsound does not play. However, when I launch the backsound from a previous trial, there seems to be no problem. Any suggestions on how to fix this?

Thanks,

Anil.