Using the laptop speakers

Hey, I use DDJ-SB and MacBook pro. When I use the DDJ-SB as output and connect it to speakers, everything is fine.
When I don't want to connect it to speakers, and I want the sound to come out of the laptop's speakers, then I have a problem.
Either I can hear the mix in the laptop but don't have the cue in headphones, or I have the cue in the headphones but silence on the computer.
Any way of solving this with some modification of the audio settings on Cross?
When I don't want to connect it to speakers, and I want the sound to come out of the laptop's speakers, then I have a problem.
Either I can hear the mix in the laptop but don't have the cue in headphones, or I have the cue in the headphones but silence on the computer.
Any way of solving this with some modification of the audio settings on Cross?