EVERYTHING YOU NEED TO KNOW TO SET UP AND USE EJAMMING 

If you still don't hear audio when you create or join a session, then you need to set your input abd output devices on your Sound tab in System Preferences.

connecting your gear:

       Mac System Preferences: Sound

NOTE: if you’re using Line In or the internal mic as an audio capture device on a Mac, Core Audio will add 40mS of latency to your signal chain.  


Use an external audio interface to bypass that Core Audio 40mS buffer.  And make sure your devices are set to SAMPLE AT 44.1kHz in Audio-MIDI Setup too. 


CLICK the "Input" tab and SELECT 

"Built-in Input" or "Built-In Mic"


CLICK the "Output" tab and SELECT "Built-in Output"  


[NOTE: SELECT "Built in Input/Built in Mic" and "Built in Output".  Do NOT select the actual hardware or internal devices you’ve selected in eJamming Preferences because that will cause pops and noise due to driver conflicts.] 

OPEN System Preferences and CLICK the "SOUND" icon.

How to Set your Input and Output Devices in your Mac's System Preferences​: