I’m running BIAB on a high-end Dell XPS laptop. For the longest, I used the mini audio jack, with no major issues, straight to the mixer and on to powered speakers. Sound was always clean. However, I’d hold my breath, thinking it might break, because that jack seems so fragile. Recently, I started using a PreSonus “Fire Studio Mobile” interface. It runs off of the firewire port on the laptop, with cables from the interface to the mixer. The sound is much improved to my hearing. But, it’s more stuff to carry, with more wires and clutter. You’ve got to place the interface somewhere, since it won’t fit on the stand, where the laptop sits. The interface has its own AC power cable.