New User can only hear vocals, not guitars

[jeffdanielski]

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Hi, quick reply. (I'm travelling)
You should be monitoring your audio interface (2i2) at all times when on JK, not your mac. Again, local monitoring switched off, meaning you'll only have audio to your headphones when in a session.
D./

Thanks Dimitri. Success! I appreciate the tip on monitoring the 2i2. What ultimately made the difference was that in my Mac's sound settings, the output was not set to the 2i2, but rather to the internal speaker. I switched the output to the 2i2, unplugged the 2i2 and plugged it back in, and then it worked.

Thanks again for taking the time. Hopefully this will be helpful to others.