Acid Pro 4.0 doesn't see my Mackie Black Jack USB interface, but SoundForge 6.0 is happy with it. So I've had to keep with my old M-Audio Omni Studio break out box connected to a Delta 66 sound card to record into Acid Pro 4.0. Pro 7.0 gave me headaches; very happy w/4.0 except for having to use my old interface, which now has zero output to monitors. :( No out jack on the unit works, period, not even both headphone jacks. I can't figure this out. So, in light of potentially having to try a third interface now, what are you all using? Does anyone use something that works with 4.0 using Windows 10? Thanks.