How to hear iTunes through presonus firebox in reaper?

[X14Halo]

I am using my firebox to connect my electronic drums to my computer to trigger superior drummer...but my computer sounds don't work when I do this. My headphones are plugged into the firebox. Is there any way to listen to superior drummer (through reaper) and my computer sounds at the same time?

 

[Damian B]

On Windows, go to control panel and select "sound." There you can set Windows to use your firebox as the default sound card.

 

[caneris]

its the same on mac too. system preferences> sound> default