Recently upgraded to Studio 5 from older version, I'm using a 2020 Macbook pro. I've looked at preferences - audio setup- and it says the sound is being sent to my Macbook (haven't set up audio interface etc yet). I have an MP3 in the live recording session only just to test playback and there's no sound although I can see that the signals are all being picked up in the program. Not sure how to fix this