Hey Sanjays,
In order to hear audio apart from the cue in your headphones you are going to need to connect another audio device to the master out section on the back of your Ergo. Depending what monitoring/listening equipment you have you can connect using the TRS outs or the RCA outs.
If you really wanted the master out audio to be played from your laptop speakers you could run a RCA to 3.5mm cable to a line in on your laptop and adjust your audio settings on your laptop so line in is set to playback. Instructions on how to do this can be found here:
serato.com
Let me know if that helps,
Cheers, Sam