Reply to Routing sound through my controller?

Hi all,

So, I have a question about routing sound. I am wondering if it is possible to run the sound on my computer through my DJ controller. To expand...I have sound running to my speakers fine, through both Serato and Traktor. But I am wondering if it is possible to route the sound coming from other programs (specifically from SoundCloud (via Chrome) or Logic Pro). Does anybody know if this is possible, and if so how?

I've tried adjusting my Sound settings in preferences (OS X) to "Play sound effects through: DDJ-SX controller" to no avail.

The setup I am running (if these facts matter or not, not sure): DDJ-SX Controller, MBProR (USB to controller), Rokit Speakers, connected to DDJ-SX via XLR.

If anyone has any help, I'd greatly appreciate it.

Thanks all.