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I am not able to record my mix and I'm using MoJave Serato DJ Pro, with these specs
MacBook Air (Retina, 13-inch, 2019)
Intel UHD Graphics 617 1536 MB
8 GB 2133 MHz LPDDR3
1.6 GHz Intel Core i5
Do you mean the audio portion of your mix? If so, what audio hardware (mixer/controller) are you using?